你以为 CSS 只是个简单的布局？

站长手记作者： 2024-08-28 15:30:02

本文中，所有的图形都是在单个标签内实现的，大量使用了 CSS3 中的 ::before 、::after 伪元素，transparent 、border，多重线性与径向渐变，多重内外阴影，如果你的效果不尽人意，请尝试在 Chrome 浏览器下预览。

CSS3 奇思妙想

装逼指南

装逼技巧

.css-cell{
    position: relative;
    width: 100%;
    height: 300px;
}

<!--heart-->
<div>
    <div></div>
</div>

<div>
    <div>
        <div></div>
    </div>
</div>

装逼实战

爱心

/*heart*/
.heart{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%) rotate(45deg);
    background: red;
    width: 100px;
    height: 100px;
}
.heart:before,
.heart:after
{
    content: '';
    position: absolute;
    top: 0;
    left: -50px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: red;
}
.heart:after{
    top: -50px;
    left: 0;
}

气泡悬浮框

/*bubbly*/
.bubbly{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    background: #00ccbb;
    border-radius: 8px;
    width: 200px;
    padding: 40px 10px;
    text-align: center;
    color: white;
    font-size: 20px;
}
.bubbly:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    border: 34px solid transparent;
    border-top-color: #00ccbb;
    border-bottom: 0;
    border-left: 0;
    margin: 0 0 -34px -17px;
}

切角

/*notching*/
.notching{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 200px;
    padding: 60px 20px;
}
.notching{
    background:
            linear-gradient(135deg, transparent 15px, deeppink 0)
            top left,
            linear-gradient(-135deg, transparent 15px, deeppink 0)
            top right,
            linear-gradient(-45deg, transparent 15px, deeppink 0)
            bottom right,
            linear-gradient(45deg, transparent 15px, deeppink 0)
            bottom left;
    background-size: 50% 50%;
    background-repeat: no-repeat;
}

弧形切角

/*arc*/
.arc{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 80px;
    padding: 80px;
}
.arc {
    background:
            radial-gradient(circle at top left,
            transparent 15px, yellowgreen 0) top left,
            radial-gradient(circle at top right,
            transparent 15px, yellowgreen 0) top right,
            radial-gradient(circle at bottom right,
            transparent 15px, yellowgreen 0) bottom right,
            radial-gradient(circle at bottom left,
            transparent 15px, yellowgreen 0) bottom left;
    background-size: 50% 50%;
    background-repeat: no-repeat;
}

梯形

/*trapezoid*/
.trapezoid{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 160px;
    padding: 60px;
}
.trapezoid:before{
    content:"";
    position: absolute;
    top: 0; 
    right: 0;
    bottom: 0; 
    left: 0;
    transform:perspective(40px) scaleY(1.3) rotateX(5deg);
    transform-origin: bottom;
    background:dodgerblue;
    z-index:-1;
}

饼图

/*pie*/
.pie{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 200px;
    height:200px;
    border-radius:50%;
    text-align: center;
    background-color:yellowgreen;
    overflow:hidden;
    background-image: linear-gradient(to right, transparent 50%, #655 0);
    cursor:pointer;
}
.pie:before{
    content:"";
    position:absolute;
    top:0;
    left:50%;
    width:50%;
    height:100%;
    background-color: inherit;
    transform-origin: left;
    z-index:-1;
    transform:rotate(.1turn);
}
.pie:hover:before{
    transition:all 1s;
    transform:rotate(.45turn);
}

平行四边形

/*parallelogram*/
.parallelogram{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 200px;
    height:120px;

}
.parallelogram:before{
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color:#00aabb;
    z-index:-1;
    transform: skew(.08turn);
}

折角

/*corner*/
.corner{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 120px;
    height:120px;
    padding:40px;
    background:linear-gradient(-150deg,transparent 1.5em, yellowgreen  0);
    border-radius:8px;
}
.corner:before{
    content: '';
    position: absolute;
    top: 0; right: 0;
    background: linear-gradient(to left bottom,transparent 50%, rgba(0,0,0,.2) 0, rgba(0,0,0,.4)) 100% 0 no-repeat;
    width: 1.73em;
    height: 3em;
    transform: translateY(-1.3em) rotate(-30deg);
    transform-origin: bottom right;
    border-bottom-left-radius: inherit;
    box-shadow: -.2em .2em .3em -.1em rgba(0,0,0,.15);
}

纯 CSS 方案实现背景变暗效果（hover按钮触发）

/*spectiveBlur*/
.spectiveBlur{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 220px;
    height:160px;
    transform: translate(-50%, -50%);
    border-radius:10px;
    overflow:hidden;
    background:#E91E63;
    cursor:pointer;
    transition: transform .2s;
}
.spectiveBlur:hover{
    box-shadow:0 0 0 1920px rgba(0,0,0,.7);
    transform: translate(-50%, -50%) scale(1.2);
}

条纹背景图

/*stripe*/
.stripe{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 200px;
    height:200px;
    background:deeppink;
    border-radius:.5em;
    background:repeating-linear-gradient(45deg,#CC9999, #CC9999 15px, #CCCCCC 0, #CCCCCC 30px)
}

/*wave-stripe*/
.wave-stripe{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 200px;
    height:200px;
    border-radius:.5em;
    background:
            linear-gradient(135deg, deeppink 25%, transparent 25%) -50px 0,
            linear-gradient(225deg, deeppink 25%, transparent 25%) -50px 0,
            linear-gradient(315deg, deeppink 25%, transparent 25%),
            linear-gradient(45deg, deeppink 25%, transparent 25%);
    background-size: 40px 40px;
}

/*arrow-stripe*/
.arrow-stripe{
    position: absolute;
    top:50%;
    left: 50%;
    transform:translate(-50%,-50%);
    width: 200px;
    height:200px;
    border-radius:.5em;
    background:
            linear-gradient(45deg, #92baac 45px, transparent 45px)64px 64px,
            linear-gradient(45deg, #92baac 45px, transparent 45px,transparent 91px, #e1ebbd 91px, #e1ebbd 135px, transparent 135px),
            linear-gradient(-45deg, #92baac 23px, transparent 23px, transparent 68px,#92baac 68px,#92baac 113px,transparent 113px,transparent 158px,#92baac 158px);
    background-color:#e1ebbd;
    background-size: 128px 128px;
}

混合模式背景图

.colorful-stripe {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 200px;
    text-align: center;
    color: #fff;
    font-size: 200%;
    border-radius: .5em;
    background:
            linear-gradient(limegreen, transparent), linear-gradient(90deg, skyblue, transparent), linear-gradient(-90deg, coral, transparent);
    background-blend-mode: screen;
}

太阳

/*sun*/
.sun{
    position: absolute;
    top: 50%;
    left: 50%;
    width:200px;
    height:260px;
    transform: translate(-50%, -50%);
    background:#0BF;
    border-radius:5px;
}
.sun:before{
    content:"";
    position: absolute;
    width: 80px;
    height: 80px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border-radius:50%;
    background:rgba(255, 238, 68, 1);
    box-shadow: 0 0 0 15px rgba(255,255,0,0.2),0 0 15px #fff;
    z-index:-10;
}
.sun:after{
    content:"";
    position: absolute;
    top: 50%;
    left: 50%;
    height: 160px;
    width: 160px;
    transform: translate(-50%, -50%) rotate(30deg);
    z-index:-100;
    background-image:
            -webkit-linear-gradient(top,rgba(255,255,255,0) 0%, rgba(255,255,255,0.8) 50%, rgba(255,255,255,0) 100%),
            -webkit-linear-gradient(left,rgba(255,255,255,0) 0%, rgba(255,255,255,0.8) 50%, rgba(255,255,255,0) 100%);
    background-size: 20px 100%, 100% 20px;
    background-repeat: no-repeat;
    background-position: center center, center center;
    animation:sunRotate 10s linear infinite;
}
@keyframes sunRotate{
    0%{
        transform: translate(-50%, -50%) rotate(30deg);
    }
    100%{
        transform: translate(-50%, -50%) rotate(390deg);
    }
}

多云

/*cloudy*/
.cloudy{
    position: absolute;
    top: 50%;
    left: 50%;
    width:200px;
    height:260px;
    transform: translate(-50%, -50%);
    background:#2EB5E5;
    border-radius:5px;
}
.cloudy:before {
    content: "";
    text-indent:23px;
    font-size:22px;
    line-height:40px;
    color:#333;
    position: absolute;
    height: 50px;width: 50px;
    background: #FFFFFF;
    left:30%;
    top:45%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    box-shadow:
            #FFFFFF 65px -15px 0 -5px,
            #FFFFFF 25px -25px,
            #FFFFFF 30px 10px,
            #FFFFFF 60px 15px 0 -10px,
            #FFFFFF 85px 5px 0 -5px,
            #C8C8C8 35px -35px,
            #C8C8C8 66px -27px 0 -5px,
            #C8C8C8 91px -10px 0 -8px;
    animation: cloudy 5s ease-in-out infinite;
}
.cloudy:after{
    content:"";
    position: absolute;
    top: 80%;
    left: 50%;
    height: 15px;
    width: 120px;
    background:rgba(0,0,0,.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: cloudy_shadow 5s ease-in-out infinite;
}
@keyframes cloudy {
    50%{
        transform: translate(-50%, -70%);
    }
    100%{
        transform: translate(-50%, -50%);
    }
}
@keyframes cloudy_shadow {
    50%{
        transform: translate(-50%, -50%) scale(0.8);
        background:rgba(0,0,0,.2);
    }
    100%{
        transform: translate(-50%, -50%) scale(1);
        background:rgba(0,0,0,.5);
    }
}

/*cloudy2*/
.cloudy2{
    position: absolute;
    top: 50%;
    left: 50%;
    width:200px;
    height:260px;
    transform: translate(-50%, -50%);
    background:#2EB5E5;
    border-radius:5px;
}
.cloudy2:before {
    content: "";
    text-indent:23px;
    font-size:22px;
    line-height:40px;
    color:#333;
    position: absolute;
    height: 50px;width: 50px;
    background: #FFFFFF;
    left:30%;
    top:55%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    z-index:100;
    box-shadow:
            #FFFFFF 65px -15px 0 -5px,
            #FFFFFF 25px -25px,
            #FFFFFF 30px 10px,
            #FFFFFF 60px 15px 0 -10px,
            #FFFFFF 85px 5px 0 -5px;
    animation: cloudy2 5s ease-in-out infinite;
}
.cloudy2:after{
    content:"";
    position: absolute;
    top: 45%;left: 63%;
    height: 60px;
    width: 60px;
    z-index:10;
    background:linear-gradient(180deg,#FE9F38 0%, #F46635 100%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px 4px #FFA563;
    animation: cloudy2 10s ease-in-out infinite;
}
@keyframes cloudy2 {
    50%{
        transform: translate(-50%, -70%);
    }
    100%{
        transform: translate(-50%, -50%);
    }
}

/*rainy*/
.rainy {
    position: absolute;
    width: 3px;
    height: 6px;
    top: 30%;
    left: 50%;
    background: #CCCCCC;
    border-radius: 50%;
    animation: rainy_rain .7s infinite linear;
}
.rainy:before {
    content: "";
    color: #333;
    position: absolute;
    height: 50px;
    width: 50px;
    top: 30px;
    left: -40px;
    background: #CCC;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    box-shadow: #CCC 65px -15px 0 -5px, #CCC 25px -25px, #CCC 30px 10px, #CCC 60px 15px 0 -10px, #CCC 85px 5px 0 -5px;
    animation: cloudy 5s ease-in-out infinite;
}
.rainy:after {
    content: "";
    position: absolute;
    top: 120px;
    left: 50%;
    height: 15px;
    width: 120px;
    background: rgba(0, 0, 0, .5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: cloudy_shadow 5s ease-in-out infinite;
}
@keyframes cloudy {
    50% {
        transform: translate(-50%, -70%);
    }
    100% {
        transform: translate(-50%, -50%);
    }
}
@keyframes cloudy_shadow {
    50% {
        transform: translate(-50%, -50%) scale(0.8);
        background: rgba(0, 0, 0, .2);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        background: rgba(0, 0, 0, .5);
    }
}
@keyframes rainy_rain {
    0% {
        box-shadow: rgba(0, 0, 0, 0) -10px 30px, rgba(0, 0, 0, 0) 40px 40px, rgba(0, 0, 0, .3) -50px 75px, rgba(0, 0, 0, .3) 55px 50px, rgba(0, 0, 0, .3) -18px 100px, rgba(0, 0, 0, .3) 12px 95px, rgba(0, 0, 0, .3) -31px 45px, rgba(0, 0, 0, .3) 30px 35px;
    }
    25% {
        box-shadow: rgba(0, 0, 0, .3) -10px 45px, rgba(0, 0, 0, .3) 40px 60px, rgba(0, 0, 0, .3) -50px 90px, rgba(0, 0, 0, .3) 55px 65px, rgba(0, 0, 0, 0) -18px 120px, rgba(0, 0, 0, 0) 12px 120px, rgba(0, 0, 0, .3) -31px 70px, rgba(0, 0, 0, .3) 30px 60px;
    }
    26% {
        box-shadow: rgba(0, 0, 0, .3) -10px 45px, rgba(0, 0, 0, .3) 40px 60px, rgba(0, 0, 0, .3) -50px 90px, rgba(0, 0, 0, .3) 55px 65px, rgba(0, 0, 0, 0) -18px 40px, rgba(0, 0, 0, 0) 12px 20px, rgba(0, 0, 0, .3) -31px 70px, rgba(0, 0, 0, .3) 30px 60px;
    }
    50% {
        box-shadow: rgba(0, 0, 0, .3) -10px 70px, rgba(0, 0, 0, .3) 40px 80px, rgba(0, 0, 0, 0) -50px 100px, rgba(0, 0, 0, .3) 55px 80px, rgba(0, 0, 0, .3) -18px 60px, rgba(0, 0, 0, .3) 12px 45px, rgba(0, 0, 0, .3) -31px 95px, rgba(0, 0, 0, .3) 30px 85px;
    }
    51% {
        box-shadow: rgba(0, 0, 0, .3) -10px 70px, rgba(0, 0, 0, .3) 40px 80px, rgba(0, 0, 0, 0) -50px 45px, rgba(0, 0, 0, .3) 55px 80px, rgba(0, 0, 0, .3) -18px 60px, rgba(0, 0, 0, .3) 12px 45px, rgba(0, 0, 0, .3) -31px 95px, rgba(0, 0, 0, .3) 30px 85px;
    }
    75% {
        box-shadow: rgba(0, 0, 0, .3) -10px 95px, rgba(0, 0, 0, .3) 40px 100px, rgba(0, 0, 0, .3) -50px 60px, rgba(0, 0, 0, 0) 55px 95px, rgba(0, 0, 0, .3) -18px 80px, rgba(0, 0, 0, .3) 12px 70px, rgba(0, 0, 0, 0) -31px 120px, rgba(0, 0, 0, 0) 30px 110px;
    }
    76% {
        box-shadow: rgba(0, 0, 0, .3) -10px 95px, rgba(0, 0, 0, .3) 40px 100px, rgba(0, 0, 0, .3) -50px 60px, rgba(0, 0, 0, 0) 55px 35px, rgba(0, 0, 0, .3) -18px 80px, rgba(0, 0, 0, .3) 12px 70px, rgba(0, 0, 0, 0) -31px 25px, rgba(0, 0, 0, 0) 30px 15px;
    }
    100% {
        box-shadow: rgba(0, 0, 0, 0) -10px 120px, rgba(0, 0, 0, 0) 40px 120px, rgba(0, 0, 0, .3) -50px 75px, rgba(0, 0, 0, .3) 55px 50px, rgba(0, 0, 0, .3) -18px 100px, rgba(0, 0, 0, .3) 12px 95px, rgba(0, 0, 0, .3) -31px 45px, rgba(0, 0, 0, .3) 30px 35px;
    }
}

微风

/*breeze*/
.breeze-container{
    position: absolute;
    top: 50%;left: 50%;
    width:200px;height:260px;
    transform: translate(-50%, -50%);
    text-align:center;
    font-size:200%;
    color:#fff;
    background:#00BBFF;
    border-radius:5px;
}
.breeze-container:after{
    content:"";
    position:absolute;
    top:58%;
    left:50%;
    transform: translate(-50%, -50%);
    width:6px;
    height:70px;
    background:#fff;
}
.breeze{
    position:absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(1deg);
    border-bottom:60px solid #fff;
    border-left:5px solid transparent;
    border-right:5px solid transparent;
    animation: windmill 12s infinite linear;
    transform-origin:50.5% 62px;
}
.breeze:before{
    position:absolute;
    top: 75px;left: -59px;
    content:"";
    border-right:60px solid #fff;
    border-top:5px solid transparent;
    border-bottom:5px solid transparent;
    transform:rotate(-30deg);
}
.breeze:after{
    position:absolute;
    top: 75px;left: -1px;
    content:"";
    border-left:60px solid #fff;
    border-top:5px solid transparent;
    border-bottom:5px solid transparent;
    transform:rotate(30deg);
}
@keyframes windmill{
    0%{
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100%{
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

彩虹

/*rainbow*/
.rainbow-container{
    position: absolute;
    top: 50%;
    left: 50%;
    width:200px;
    height:260px;
    transform: translate(-50%, -50%);
    background:#F3D166;
    border-radius:5px;
}
.rainbow{
    position:absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    height: 1px;width: 1px;
}
.rainbow:before{
    content:"";
    position:absolute;
    top: 50%;left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    height: 70px;width: 70px;
    border-radius: 100px 0 0 0;
    box-shadow:
            #F44336 -2px -2px 0 1px,
            #FF9800 -4px -4px 0 3px,
            #FFEB3B -6px -6px 0 5px,
            #8BC34A -8px -8px 0 7px,
            #00BCD4 -10px -10px 0 9px,
            #2196F3 -12px -12px 0 11px,
            #9C27B0 -14px -14px 0 13px;
    animation: rainbow 5s ease-in-out infinite;
}
.rainbow:after{
    content: "";
    position: absolute;
    top: 70px;
    left: 50%;
    height: 15px;
    width: 120px;
    background: rgba(0, 0, 0, .5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: cloudy_shadow 5s ease-in-out infinite;
}
@keyframes rainbow {
    50% {
        transform: translate(-50%, -55%) rotate(30deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(45deg);
    }
}
@keyframes cloudy_shadow {
    50% {
        transform: translate(-50%, -50%) scale(0.8);
        background: rgba(0, 0, 0, .2);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        background: rgba(0, 0, 0, .5);
    }
}

夜空

/*starry*/
.starry-container{
    position: absolute;
    top: 50%;
    left: 50%;
    width:200px;
    height:260px;
    transform: translate(-50%, -50%);
    background:#222233;
    border-radius:5px;
}
.starry{
    position:absolute;
    top: 30%;left: 40%;
    transform: translate(-50%, -50%);
    height: 4px;width: 4px;
    border-radius:50%;
    box-shadow:
            #FFFFFF -26px 77px 0 -1px,
            rgba(255,255,255,0.1) -36px 59px 0 -1px,
            rgba(255,255,255,0.1) -28px 89px 0 -1px,
            #FFFFFF -35px 20px 0 -1px,
            #FFFFFF 14px 100px,
            rgba(255,255,255,0.1) 41px 60px,
            #FFFFFF 34px 39px,
            rgba(255,255,255,0.1) 14px 45px 0 -1px,
            #FFFFFF 64px 12px 0 -1px,
            rgba(255,255,255,0.1) 32px 96px 0 -1px,
            #FFFFFF 64px 71px,
            rgba(255,255,255,0.1) 60px 18px 0 -1px,
            #FFFFFF 34px 9px,
            rgba(255,255,255,0.1) -26px 55px 0 -1px;
    animation: starry_star 5s ease-in-out infinite;
}
.starry:before{
    content:"";
    position:absolute;
    top: 20%;left: 50%;
    width:100px;height:100px;
    box-shadow: #FFFFFF -25px 0;
    transform: rotate(-5deg);
    border-radius: 50%;
    animation: starry 5s ease-in-out infinite;
}
@keyframes starry {
    50% {
        transform: rotate(10deg);
    }
}
@keyframes starry_star{
    50%{
        box-shadow:
                rgba(255,255,255,0.1) -26px 77px 0 -1px,
                #FFF -36px 59px 0 -1px,
                #FFF -28px 89px 0 -1px,
                rgba(255,255,255,0.1) -35px 20px 0 -1px,
                rgba(255,255,255,0.1) 14px 100px,
                #FFF 41px 60px,
                rgba(255,255,255,0.1) 34px 39px,
                #FFF 14px 45px 0 -1px,
                rgba(255,255,255,0.1) 64px 12px 0 -1px,
                #FFF 32px 96px 0 -1px,
                rgba(255,255,255,0.1) 64px 71px,
                #FFF 60px 18px 0 -1px,
                rgba(255,255,255,0.1) 34px 9px,
                #FFF -26px 55px 0 -1px;
    }
}

雷电

/*thunder*/
.thunder-container {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 260px;
    transform: translate(-50%, -50%);
    background: #444;
    border-radius: 5px;
}
.thunder {
    color: #333;
    position: absolute;
    height: 50px;
    width: 50px;
    top: 40%;
    left: 30%;
    background: #222;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    box-shadow:
            #222 65px -15px 0 -5px,
            #222 25px -25px,
            #222 30px 10px,
            #222 60px 15px 0 -10px,
            #222 85px 5px 0 -5px;
    animation: cloudy 5s ease-in-out infinite;
}
.thunder:before {
    content: "";
    position: absolute;
    top: 60px;
    left: 60px;
    border-left: 0px solid transparent;
    border-right: 8px solid transparent;
    border-top: 38px solid yellow;
    box-shadow: yellow -7px -32px;
    transform:rotate(30deg);
    transform-origin:center -50px;
    animation:stormy_thunder 2s steps(1, end) infinite;;
}
.thunder:after {
    content: "";
    position: absolute;
    top: 120px;
    left: 64px;
    height: 15px;
    width: 120px;
    background: rgba(0, 0, 0, .5);
    border-radius: 50%;
    z-index:-1;
    transform: translate(-50%, -50%);
    animation: cloudy_shadow 5s ease-in-out infinite;
}
@keyframes cloudy {
    50% {
        transform: translate(-50%, -30px);
    }
}
@keyframes cloudy_shadow {
    50% {
        transform: translate(-50%, 0) scale(0.8);
        background: rgba(0, 0, 0, .2);
    }
}
@keyframes stormy_thunder{
    0%  {  transform: rotate(30deg); opacity:1; }
    5%  {  transform: rotate(-34deg); opacity:1; }
    10% {  transform: rotate(0deg); opacity:1; }
    15% {  transform: rotate(-34deg); opacity:0; }
}

大雪

/*snow*/
.snowy-container {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 260px;
    transform: translate(-50%, -50%);
    text-align: center;
    font-size: 200%;
    color: #fff;
    background: #607D8B;
    border-radius: 5px;
}
.snowy {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius:50%;
    top: 30%;
    left: 50%;
    background: #fff;
    border-radius: 50%;
    animation: snowy_rain 2s infinite linear;
}
.snowy:before {
    content: "";
    color: #333;
    position: absolute;
    height: 50px;
    width: 50px;
    top: 30px;
    left: -40px;
    background: #eee;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    box-shadow:
            #eee 65px -15px 0 -5px,
            #eee 25px -25px,
            #eee 30px 10px,
            #eee 60px 15px 0 -10px,
            #eee 85px 5px 0 -5px;
    animation: cloudy 5s ease-in-out infinite;
}
.snowy:after {
    content: "";
    position: absolute;
    top: 120px;
    left: 50%;
    height: 15px;
    width: 120px;
    background: rgba(0, 0, 0, .5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: cloudy_shadow 5s ease-in-out infinite;
}
@keyframes cloudy {
    50% {
        transform: translate(-50%, -70%);
    }
    100% {
        transform: translate(-50%, -50%);
    }
}
@keyframes cloudy_shadow {
    50% {
        transform: translate(-50%, -50%) scale(0.8);
        background: rgba(0, 0, 0, .2);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        background: rgba(0, 0, 0, .5);
    }
}
@keyframes snowy_rain {
    0% {
        box-shadow:
                rgba(255, 255, 255, 0) -10px 30px,
                rgba(255, 255, 255, 0) 40px 40px,
                rgba(255, 255, 255, .6) -50px 75px,
                rgba(255, 255, 255, .6) 55px 50px,
                rgba(255, 255, 255, .6) -18px 100px,
                rgba(255, 255, 255, .6) 12px 95px,
                rgba(255, 255, 255, .6) -31px 45px,
                rgba(255, 255, 255, .6) 30px 35px;
    }
    25% {
        box-shadow:
                rgba(255, 255, 255, .6) -10px 45px,
                rgba(255, 255, 255, .6) 40px 60px,
                rgba(255, 255, 255, .6) -50px 90px,
                rgba(255, 255, 255, .6) 55px 65px,
                rgba(255, 255, 255, 0) -18px 120px,
                rgba(255, 255, 255, 0) 12px 120px,
                rgba(255, 255, 255, .6) -31px 70px,
                rgba(255, 255, 255, .6) 30px 60px;
    }
    26% {
        box-shadow:
                rgba(255, 255, 255, .6) -10px 45px,
                rgba(255, 255, 255, .6) 40px 60px,
                rgba(255, 255, 255, .6) -50px 90px,
                rgba(255, 255, 255, .6) 55px 65px,
                rgba(255, 255, 255, 0) -18px 40px,
                rgba(255, 255, 255, 0) 12px 20px,
                rgba(255, 255, 255, .6) -31px 70px,
                rgba(255, 255, 255, .6) 30px 60px;
    }
    50% {
        box-shadow:
                rgba(255, 255, 255, .6) -10px 70px,
                rgba(255, 255, 255, .6) 40px 80px,
                rgba(255, 255, 255, 0) -50px 100px,
                rgba(255, 255, 255, .6) 55px 80px,
                rgba(255, 255, 255, .6) -18px 60px,
                rgba(255, 255, 255, .6) 12px 45px,
                rgba(255, 255, 255, .6) -31px 95px,
                rgba(255, 255, 255, .6) 30px 85px;
    }
    51% {
        box-shadow:
                rgba(255, 255, 255, .6) -10px 70px,
                rgba(255, 255, 255, .6) 40px 80px,
                rgba(255, 255, 255, 0) -50px 45px,
                rgba(255, 255, 255, .6) 55px 80px,
                rgba(255, 255, 255, .6) -18px 60px,
                rgba(255, 255, 255, .6) 12px 45px,
                rgba(255, 255, 255, .6) -31px 95px,
                rgba(255, 255, 255, .6) 30px 85px;
    }
    75% {
        box-shadow:
                rgba(255, 255, 255, .6) -10px 95px,
                rgba(255, 255, 255, .6) 40px 100px,
                rgba(255, 255, 255, .6) -50px 60px,
                rgba(255, 255, 255, 0) 55px 95px,
                rgba(255, 255, 255, .6) -18px 80px,
                rgba(255, 255, 255, .6) 12px 70px,
                rgba(255, 255, 255, 0) -31px 120px,
                rgba(255, 255, 255, 0) 30px 110px;
    }
    76% {
        box-shadow:
                rgba(255, 255, 255, .6) -10px 95px,
                rgba(255, 255, 255, .6) 40px 100px,
                rgba(255, 255, 255, .6) -50px 60px,
                rgba(255, 255, 255, 0) 55px 35px,
                rgba(255, 255, 255, .6) -18px 80px,
                rgba(255, 255, 255, .6) 12px 70px,
                rgba(255, 255, 255, 0) -31px 25px,
                rgba(255, 255, 255, 0) 30px 15px;
    }
    100% {
        box-shadow:
                rgba(255, 255, 255, 0) -10px 120px,
                rgba(255, 255, 255, 0) 40px 120px,
                rgba(255, 255, 255, .6) -50px 75px,
                rgba(255, 255, 255, .6) 55px 50px,
                rgba(255, 255, 255, .6) -18px 100px,
                rgba(255, 255, 255, .6) 12px 95px,
                rgba(255, 255, 255, .6) -31px 45px,
                rgba(255, 255, 255, .6) 30px 35px;
    }
}

五角星

/*star*/
.five-star{
    position: absolute;
    top: 35%;
    right: 50%;
    transform: translate(-50%, -50%) scale(8);
    width: 0;
    height: 0;
    display: block;
    border-left: 3.04px solid transparent;
    border-right: 3.24px solid transparent;
    border-bottom: 10px solid #98DBE3;
    -webkit-filter: drop-shadow(1px .5px 1px #ccc);
    cursor: pointer;
}
.five-star:before{
    content: "";
    position: absolute;
    top: 8.65px;
    left: -8.82px;
    width: 0;
    height: 0;
    color: #98DBE3;
    display: block;
    border-left: 12.5px solid transparent;
    border-right: 12.5px solid transparent;
    border-bottom: 9.08px solid #98DBE3;
    transform-origin: top center;
    transform: rotate(36deg);
}
.five-star:after{
    content: "";
    position: absolute;
    top: 8.65px;
    left: -15px;
    width: 0;
    height: 0;
    color: #98DBE3;
    display: block;
    border-left: 12.5px solid transparent;
    border-right: 12.5px solid transparent;
    border-bottom: 9.08px solid #98DBE3;
    transform-origin: top center;
    transform: rotate(-36deg);
}

太极八卦

/*TaiChi*/
.TaiChi{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    transform: translate(-50%, -50%);
    box-shadow:0 0 2px #ddd;
    border-radius:50%;
    background-image:
            radial-gradient(#000 12.5px, transparent 12.5px),
            radial-gradient(#fff 12.5px, transparent 12.5px),
            radial-gradient(#fff 50px, transparent 50px),
            radial-gradient(#000 50px, transparent 50px),
            linear-gradient(90deg,#000 100px, #fff 100px);
    background-position:center 50px,center -50px,center 50px,center -50px,0 0;
}

美队盾牌

/*captainAmerica*/
.captainAmerica{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    transform: translate(-50%, -50%);
    background:
            linear-gradient(45deg, rgba(255,255,255,0) 35%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 65%),
            linear-gradient(-45deg, rgba(255,255,255,0) 35%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 65%),
            linear-gradient(to right, rgba(0,0,0,0) 35%, rgba(0,0,0,0.2) 50%, rgba(0,0,0,0) 65%),
            linear-gradient(to bottom, rgba(0,0,0,0) 35%, rgba(0,0,0,0.2) 50%, rgba(0,0,0,0) 65%),
            radial-gradient(ellipse at center, #0033b0 20%, #ce0021 20%, #ce0021 35%, #eee 35%, #eee 55%, #ce0021 55%);
    border-radius: 50%;
    box-shadow: 0 3px 0 #a20917,0 4px 2px 2px #eee;
}
.captainAmerica::before{
    content: '★';
    position:absolute;
    top: 50%;left: 50%;
    transform: translate(-50%, -50%);
    margin-left:-3px;
    width: 50px;height:50px;
    font-family: simsun,Tahoma,Helvetica,Arial,SimHei,sans-serif;
    line-height: 47px;
    z-index: 1;
    border-radius: 50%;
    font-size: 55px;
    color: #fff;
    text-align:center;
    text-shadow: 2px 1px 2px #777;
}

纽扣

/*button*/
.button{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 180px;
    height: 180px;
    background: #87ceeb;
    border-radius: 50%;
    box-shadow:
            inset 0 5px 5px #87ceeb,
            inset 0 17px 5px rgba(255,255,255,0.7),
            inset 0 -3px 3px rgba(255,255,255,0.3),
            inset 0 -10px 10px rgba(0,0,0,0.3),
            inset 0 -15px 10px #45b3e0,
            0 7px 10px rgba(0,0,0,0.3);
}
.button::before{
    content: '';
    position:absolute;
    top: 50%;left: 50%;
    width: 110px;height: 106px;
    margin-left: -55px;margin-top: -55px;
    background-image:
            radial-gradient(circle at 38px 38px, #333 10px, transparent 10px),
            radial-gradient(circle at 73px 73px, #333 10px, transparent 10px),
            radial-gradient(circle at 38px 73px, #333 10px, transparent 10px),
            radial-gradient(circle at 73px 38px, #333 10px, transparent 10px);
    border-radius: 50%;
    border-top: 1px solid rgba(0,0,0,0.6);
    border-bottom: 1px solid rgba(255,255,255,0.6);
    box-shadow:
            inset 0 20px 2px rgba(255,255,255,0.3),
            3px -15px 7px -4px rgba(0,0,0,0.3),
            0 -14px 10px 5px #45b3e0,
            0 2px 5px 5px #87ceeb,
            0 10px 5px 5px rgba(255,255,255,0.6);
}
.button::after{
    content: '';
    position:absolute;
    top: 50%;left: 50%;
    width: 50px;height: 50px;
    margin-left: -25px;
    margin-top: -23px;
    background-image:
            linear-gradient(to right, transparent 35%, #000080 35%, #4682b4 40%, #000080 45%, #4682b4 50%, #000080 55%, #4682b4 60%, #000080 65%, transparent 65%),
            linear-gradient(to bottom, transparent 35%, #000080 35%, #4682b4 40%, #000080 45%, #4682b4 50%, #000080 55%, #4682b4 60%, #000080 65%, transparent 65%);
    border-radius: 50%;
    transform: rotate(45deg);
}

Chrome

/*chrome*/
.Chrome{
    position: absolute;
    top: 50%;left: 50%;
    width: 180px;height: 180px;
    transform: translate(-50%, -50%);
    box-shadow:0 0px 4px #999,0 0 2px #ddd inset;
    border-radius:50%;
    background-image:
            radial-gradient(#4FACF5 0%,#2196F3 28%, transparent 28%),
            radial-gradient(#fff 33%, transparent 33%),
            linear-gradient(-50deg,#FFEB3B 34%, transparent 34%),
            linear-gradient(60deg,#4CAF50 33%, transparent 33%),
            linear-gradient(180deg,#FF756B 0%, #F44336 30%, transparent 30%),
            linear-gradient(-120deg,#FFEB3B 40%, transparent 40%),
            linear-gradient(-60deg,#FFEB3B 30%, transparent 30%),
            linear-gradient(0deg,#4CAF50 45%, transparent 45%),
            linear-gradient(60deg,#4CAF50 30%, transparent 30%),
            linear-gradient(120deg,#F44336 50%, transparent 50%),
            linear-gradient(180deg,#F44336 30%, transparent 30%);
    background-position:0 0;
}

Opera

/*Opera*/
.Opera{
    position: absolute;
    top: 50%;left: 50%;
    width: 170px;height: 200px;
    transform: translate(-50%, -50%);
    border-radius:50%;
    box-shadow:0 2px 4px #333;
    background-image:
            linear-gradient(rgb(254, 135, 138) 0%, rgb(231, 22, 22) 50%, rgb(128, 0, 0) 85%, rgb(184, 3, 4) 100%);
}
.Opera:after{
    content:"";
    position: absolute;
    top:50%;left:50%;
    width: 60px;height: 180px;
    transform: translate(-50%, -50%);
    border-radius:50%;
    background:#fff;
}
.Opera:before{
    content:"";
    position: absolute;
    top:50%;left:50%;
    width: 72px;height: 185px;
    transform: translate(-50%, -50%);
    border-radius:50%;
    background:rgba(0,0,0,.4);
}

/*IE*/
.IE{
    position: absolute;
    top: 50%;
    left: 50%;
    width:200px;
    height:200px;
    transform: translate(-50%, -50%);
    border-radius:50%;
    background-image:
            radial-gradient(#fff 38%, transparent 38%),
            radial-gradient(#09C 0%, #09C 100%);

}
.IE:before{
    content: "";
    width:285px;
    height:122px;
    background:none;
    border-radius:100%;
    position:absolute;
    top:33px;
    left:-45px;
    margin:auto;
    box-shadow:
            inset 0 12px 0 13px  #09c,
            -35px -8px 0 -5px #fff;
    transform: rotate(-35deg);
}
.IE:after {
    content: "";
    width: 120px;
    height: 25px;
    background: #09c;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    margin: auto;
    box-shadow: 50px 23px 0 -2px #fff
}

safari

/*safari*/
.safari{
    position: absolute;
    top: 50%;left: 50%;
    width:200px; height:200px;
    transform: translate(-50%, -50%);
    border-radius:50%;
    border:5px solid #E8E8E8;
    box-shadow:
            -1px 3px 1px 2px #999,
            -1px 3px 1px 2px #999 inset;
    background-image:
            radial-gradient(transparent 30%,#fff 30%,#fff 34%, transparent 34%),
            linear-gradient(rgba(255,255,255,.8) 100%, transparent 100%),
            linear-gradient(rgba(255,255,255,.8) 100%, transparent 100%),
            linear-gradient(rgba(255,255,255,.8) 100%, transparent 100%),
            linear-gradient(rgba(255,255,255,.8) 100%, transparent 100%),
            linear-gradient(#1DE3FF 0%, #1F52EF 100%);
    background-size: 50% 50%,20px 2px,20px 2px,2px 20px,2px 20px,100%,100%;
    background-repeat:no-repeat;
    background-position:center center, 175px center,5px center,center 175px,center 5px,0 0;

}
.safari::before{
    content:"";
    position: absolute;
    top: 10px;left: 50%;
    border-radius:10px;
    border-bottom:100px solid rgba(255,255,255,.9);
    border-left:10px solid transparent;
    border-right:10px solid transparent;
    transform-origin:center 90px;
    z-index:-1;
    transform:translate(-50%, 0%) rotate(40deg);
}
.safari::after{
    content:"";
    position: absolute;
    top: 10px;left: 50%;
    border-radius:10px;
    border-bottom:100px solid rgba(255,0,0,.9);
    border-left:10px solid transparent;
    border-right:10px solid transparent;
    transform-origin:center 90px;
    transform:translate(-50%, 0%) rotate(220deg);
}
.safari:hover::before{
    transition:transform 1s;
    transform:translate(-50%, 0%) rotate(70deg);
}
.safari:hover::after{
    transition:transform 1s;
    transform:translate(-50%, 0%) rotate(250deg);
}

firefox

/*firefox*/
.firefox{
    position: absolute;
    top: 50%;left: 50%;
    width: 200px;height:200px;
    transform: translate(-50%, -50%);
    border:8px solid #eee;
    border-radius:50%;
    overflow:hidden;
    background:#F48D00;
    box-shadow:0 0 2px 0 #999;
}
.firefox::before{
    content: "";
    width: 46px;
    height: 46px;
    background: #A4DFEF;
    border-radius: 100%;
    position: absolute;
    top: 90px;
    left: 50px;
    margin: auto;
    border: 1px solid #A4DFEF;
    box-shadow:
            -10px 0 0 5px rgba(164, 223, 239, .2),
            16px -60px 0 8px rgba(164, 223, 239, .2),
            -30px -50px 0 8px #F48D00,
            25px -38px 0 0px #A4DFEF,
            -30px -30px 0 12px #F48D00,
            15px -60px 0 8px #A4DFEF,
            33px 31px 0 -15px #A4DFEF,
            30px 17px 0 -13px #F48D00,
            20px -10px 0 0px #A4DFEF,
            -8px -0px 0 19px #F48D00,
            30px 17px 0 0px #A4DFEF,
            24px 30px 0 15px #F48D00,
            20px -6px 0 28px #A4DFEF,
            45px 10px 0 35px #F48D00,
            -5px -57px 0 8px #F48D00,
            20px -23px 0 45px #A4DFEF,
            -5px -80px 0 8px #A4DFEF,
            -30px -70px 0 8px #F48D00,
            -5px -57px 0 8px #F48D00,
            43px -11px 0 55px #F48D00,
            22px -39px 0 55px #A4DFEF;
}
.firefox::after{
    content: "";
    width: 0px;
    height: 2px;
    background: linear-gradient(90deg,#F48D00 75% ,#333 30% );
    background-size: 35px 35px;
    position: absolute;
    top: 50px;
    left: 73px;
    margin: auto;
    border: solid;
    border-width: 12px 0 15px 30px;
    border-color: #A4DFEF #fff #A4DFEF transparent;
    box-shadow: inset 0px 0 0 50px #333;
}

搜狗

/*sougou*/
.sogou{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;height:200px;
    transform: translate(-50%, -50%);
    border:8px solid #fff;
    box-shadow: 2px 1px 2px 2px #ccc;
    border-radius:50%;
    overflow:hidden;
    background:#4DA0ED;
}
.sogou::before{
    content:"S";
    position: absolute;
    line-height: 185px;
    top:0;
    left:0;
    right:0;
    bottom:0;
    color:#fff;
    font-weight:600;
    font-size:320px;
    text-align:center;
    text-shadow:
            3px 0 0px #337FC4,
            -5px 0px 0px #CDE4F0,
            0px 8px 0px #387FBF;
    transform:rotate(2deg);
    z-index:-10;
    overflow:hidden;
}

利用滤镜实现混合效果

/*filter-mix*/
.filter-mix{
    position: absolute;
    top: 50%;left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;height: 200px;
    -webkit-filter:contrast(20);
    background:#fff;
}
.filter-mix::before{
    content:"";
    position: absolute;
    width:120px;
    height:120px;
    border-radius: 50%;
    background:#333;
    top:40px;
    left:0px;
    z-index:2;
    -webkit-filter:blur(6px);
    box-sizing:border-box;
    animation:filterBallMove 10s ease-out infinite;
    -webkit-animation:filterBallMove 10s ease-out infinite;
}
.filter-mix::after{
    content:"";
    position: absolute;
    width:80px;
    height:80px;
    border-radius: 50%;
    background:#3F51B5;
    top:60px;
    right:0px;
    z-index:2;
    -webkit-filter:blur(6px);
    animation:filterBallMove2 10s ease-out infinite;
    -webkit-animation:filterBallMove2 10s ease-out infinite;

}

@keyframes filterBallMove{
    50%{
        left:200px;
    }
}

@-webkit-keyframes filterBallMove{
    50%{
        left:200px;
    }
}

@keyframes filterBallMove2{
    50%{
        right:200px;
    }
}

@-webkit-keyframes filterBallMove2{
    50%{
        right:200px;
    }
}