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PHPz批改状态：合格
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<!doctype html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport"content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Document</title></head><style>.box1{background-color: red;flex: 1;/*占比1倍*/}.box2{background-color: yellow;flex: 3;/*占比3倍*/}.box3{background-color: green;flex: 1;/*占比1倍*/}.container{/*弹性盒模型*/display: flex;/*两边对齐中间留有空白*//*place-content: space-between;*//* 分散对齐 *//*place-content: space-around;*//*平均对齐*//*place-content: space-evenly;*/}</style><body><div class="container"><div class="box1">box1</div><div class="box2">box2</div><div class="box3">box3</div></div></body></html>
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