42 lines
1.0 KiB
HTML
42 lines
1.0 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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<style>
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.box{
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width:1000px;
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height:300px;
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background: gold;
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}
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.box1{
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width:50px;
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height: 50px;
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background:red;
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margin-bottom: 50px;
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}
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.box2{
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width:50px;
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height:50px;
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background: blue;
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margin-top: 100px;
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}
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.box3{
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background:pink;
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}
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</style>
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</head>
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<body>
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<div class="box1">中国</div>
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<div class="box2">美国</div>
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<p>
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总结：当给中国加下边距（100px）和给美国(50)加上边距的时候 ，会发生外边距合并的现象
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即 中国和美国的外边距等于中国和美国的外边距中较大的那个值 此例中 中美外边距为100px
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</p>
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</body>
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</html>
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