<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{margin:0;padding:0}
ul{display:table;table-layout: fixed;width:100%;
height: 200px;padding:20px;-webkit-box-sizing: border-box }
li{display:table-cell;background:#f45;word-wrap:break-word;padding:20px}
div{background:#f0f;height:100%;width:100%}
</style>
</head>
<body>
<ul>
<li>11111111111111111111111111111111111</li>
<li><div>2</div></li>
<li><div>2</div></li>
<li><div>2</div></li>
<li><div>2</div></li>
<li><div>2</div></li>
</ul>
<script> </script>
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</body>
</html>