慕勒3428872
碰巧我有点空<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title>Title</title> <style> .btn{ position: relative; width: 100px; height: 30px; line-height: 30px; -webkit-border-radius: 15px; -moz-border-radius: 15px; border-radius: 15px; border: none; color: #fff; background:-moz-linear-gradient(top, rgba(12,134,220,1), rgba(126, 219, 250,1)); background:-webkit-gradient(linear, 0 0, 0 bottom, from(rgba(12,134,220,1)), to(rgba(126, 219, 250,1))); background:-o-linear-gradient(top, rgba(12,134,220,1), rgba(126, 219, 250,1)); text-indent: 20px; box-shadow: 0 0 4px rgba(0,0,0,0.3); } .btn:before{ content: ''; display: block; width: 80px; height: 4px; -webkit-border-radius: 3px; -moz-border-radius: 3px; border-radius: 3px; position: absolute; top: 2px; right: 10px; background-color: rgba(255,255,255,.5); } </style></head><body><button class="btn" >登录</button></body></html>要自适应就改成rem就完事了