<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>第三种实现方案</title><style>.parent{display: table;width: 100%;table-layout: fixed;}.left,.right{display: table-cell;height: 300px;}.left{width: 400px;background-color: hotpink;}.right{background-color: indigo;}</style>
</head>
<body><div class="parent"><div class="left"></div><div class="right"></div></div>
</body>
</html>运行结果
