使用flex实现5种常用布局

站长手记作者： 2024-08-28 14:10:01

flex常用布局：经典的上-中-下布局。在上-中-下布局的基础上，加了左侧定宽 sidebar。左边是定宽 sidebar，右边是上-中-下布局。还是上-中-下布局，区别是 header 固定在顶部，不会随着页面滚动。左侧 sidebar 固定在左侧且与视窗同高，当内容超出视窗高度时，在 sidebar 内部出现滚动条。

Sticky Footer

<body>
  <header>HEADER</header>
  <article>CONTENT</article>
  <footer>FOOTER</footer>
</body>

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
article {
  flex: auto;
}

Fixed-Width Sidebar

<body>
  <header>HEADER</header>
  <div class="content">
    <aside>ASIDE</aside>
    <article>CONTENT</article>
  </div>
  <footer>FOOTER</footer>
</body>

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.content {
  flex: auto;
  display: flex;
}
.content article {
  flex: auto;
}

Sidebar

<body>
  <aside>ASIDE</aside>
  <div class="content">
    <header>HEADER</header>
    <article>CONTENT</article>
    <footer>FOOTER</footer>
  </div>
</body>

body {
  min-height: 100vh;
  display: flex;
}
aside {
  flex: none;
}
.content {
  flex: auto;
  display: flex;
  flex-direction: column;
}
.content article {
  flex: auto;
}

Sticky Header

<body>
  <header>HEADER</header>
  <article>CONTENT</article>
  <footer>FOOTER</footer>
</body>

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: 60px;
}
header {
  height: 60px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 0;
}
article {
  flex: auto;
  height: 1000px;
}

Sticky Sidebar

<body>
  <aside>
    ASIDE
    <p>item</p>
    <p>item</p>
    <!-- many items -->
    <p>item</p>
  </aside>
  <div class="content">
    <header>HEADER</header>
    <article>CONTENT</article>
    <footer>FOOTER</footer>
  </div>
</body>

body {
  height: 100vh;
  display: flex;
}
aside {
  flex: none;
  width: 200px;
  overflow-y: auto;
  display: block;
}
.content {
  flex: auto;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.content article {
  flex: auto;
}