<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8" />
    <title></title>
    <style type="text/css">
        span {
            display: none;
        }
        a:hover {
            _text-indent: 0;
        }
        a:hover span {
            display: inline;
        }
    </style>
</head>
<body>
    <a href="">111<span>222</span></a>
</body>
</html>