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CSS丨设置height:100%无效 #5

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wangjianuo opened this issue Jun 18, 2019 · 0 comments
Closed

CSS丨设置height:100%无效 #5

wangjianuo opened this issue Jun 18, 2019 · 0 comments

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@wangjianuo
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  • 设置height:100%的原理：
    当让一个元素的高度设置为百分比高度时，是相对于父元素的高度根据百分比来计算高度。
    所以当父元素没有高度时，height:100%也就没有高度值。
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>设置height:100%无效</title>
    <style>
        * {
            margin: 0 auto;
            padding: 0;
        }

        html {
            height: 100%;
        }

        body {
            height: 100%;
        }
    </style>
</head>

<body>
    <div style="height: 100%; background-color: pink;">666</div>
</body>

</html>
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@wangjianuo