IE6不支持min-height，解决办法使用css hack，ol内li的序号全为1，不递增。解决方法：为li设置样式display: list-item;定位父元素overflow: auto;，包含position: relative;子元素，子元素高于父元素时会溢出。解决办法：
.target {
min-height: 100px;
height: auto !important;
height: 100px; // IE6下内容高度超过会自动扩展高度
}
<style type="text/css">
.outer {
width: 215px;
height: 100px;
border: 1px solid red;
overflow: auto;
position: relative; /* 修复bug */
}
.inner {
width: 100px;
height: 200px;
background-color: purple;
position: relative;
}
</style>
<div>
<div></div>
</div>
<style type="text/css">
.p:hover,
.hover {
background: purple;
}
</style>
<p id="target">aaaa bbbbb<span>DDDDDDDDDDDd</span> aaaa lkjlkjdf j</p>
<script type="text/javascript">
function addClass(elem, cls) {
if (elem.className) {
elem.className += ' ' + cls;
} else {
elem.className = cls;
}
}
function removeClass(elem, cls) {
var className = ' ' + elem.className + ' ';
var reg = new RegExp(' +' + cls + ' +', 'g');
elem.className = className.replace(reg, ' ').replace(/^ +| +$/, '');
}
var target = document.getElementById('target');
if (target.attachEvent) {
target.attachEvent('onmouseenter', function () {
addClass(target, 'hover');
});
target.attachEvent('onmouseleave', function () {
removeClass(target, 'hover');
})
}
</script>
.opacity {
opacity: 0.4
filter: alpha(opacity=60); /* for IE5-7 */
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=60)"; /* for IE 8*/
}
display: inline-block;
*display: inline;
*zoom: 1;
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