css Multiple div floats are arranged side by side, and the heights are all adaptive (auto-increasing)
When using Div + CSS for three-column or two-column layout, the height of the two columns (or three columns) must be the same. It is easy to implement using Table, but it is more troublesome to use Div + CSS. According to the general practice, most of them use background image filling or JS script to make the height the same.
Method 1: Pure CSS solution (method combining "hidden container overflow" and "positive inner patch" and "negative outer patch"):
<style type="text/css"> <!-- #wrap{overflow:hidden;} #sidebar_left,#sidebar_right{padding-bottom:100000px;margin-bottom:-100000px;} --> </style> <div id="wrap" style="width:300px; background:#FFFF00;"> <div id="sidebar_left" style="float:left;width:100px; height:1000px; background:#FF0000;">Left</div> <div id="sidebar_mid" style="float:left;width:100px; background:#666;"> Middle<br /> Middle<br /> Middle<br /> Middle<br /> Middle<br /> Middle<br /> Middle<br /> Middle<br /> Middle<br /> </div> <div id="sidebar_right" style="float:right;width:100px; height:500px; background:#0000FF;">Right</div> </div>
Method 2: js solution (idea, this method is not recommended):
<script> var a=Math.max(document.getElementById("left").offsetHeight,document.getElementById("center").offsetHeight,document.getElementById("right").offsetHeight); //获取3个div的最大高度 document.getElementById("left").style.height = a + "px"; document.getElementById("center").style.height = a + "px"; document.getElementById("right").style.height = a + "px"; </script>
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