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问题是没有在父div的权利填充和在子div中没有右边距。我正在使用chrome。溢出:自动 - 没有权利填充和余量,镀铬
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Template</title>
</head>
<body>
<div style = "padding: 50px; overflow: auto; width: 300px; height: 300px; background-color: red;">
<div style = "width: 500px; height: 500px; background-color: green;"></div>
</div>
<hr />
<div style = "overflow: auto; width: 300px; height: 300px; background-color: red;">
<div style = "margin: 50px; width: 500px; height: 500px; background-color: green;"></div>
</div>
</body>
</html>