Div height percentage_html/css_WEB-ITnose

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Release： 2016-06-24 11:41:56

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Sometimes setting the height percentage has no effect.

The reason is that the parent element does not have a height set.

The parent element can set the height to a specific px. Or 100% and other percentages.

In this way, the height of this element can be set based on the percentage.

  <style type="text/css">        html,body {            width:100%;            height:100%;            margin:0px;            padding:0px;        }        .center {            width:80%;            margin:auto;        }        #top {            height:20%;            background-color:yellow;        }        #module {            height:60%;            background-color:gray;        }        #bottom {            height:20%;            background-color:blue;        }    </style><body>    <div id="top" class="center"></div>    <div id="module"  class="center"></div>    <div id="bottom"  class="center"></div></body>

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Div高度百分比

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