body {background-color:#00ff00;} #wrap{ width: 1000px; height: 600px; border:1px solid red; position: relative; margin: 0 auto; overflow: hidden; } #mid{ width: 1000000000000000000px; height: 100%; position: absolute; left: 0; top: 0; transition: all 0.5s; } #btns{ position: absolute; left:15;top:25; bottom: 100px;bts如何覆盖住mid?
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weibo_哆啦A梦有大口袋_0
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.parent{width: 100px;height: 100px;margin: 100px auto;position: relative;background: #000;}
.sub{position: absolute;width: 100%;height: 100%;background: red;}
</style>
</head>
<body>
<div class="parent">
<div class="sub"></div>
</div>
</body>
</html>
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