<header>
<div class="cover">
<img src="images/bg.jpg" alt="">
</div>
</header>.cover { border-radius: 50%; width: 180px; height: 180px; overflow: hidden; border: 10px ridge #F4E9E0;
}在线JS测试：http://tool.apizl.com/dev/runCode/9dc4e0905c56ba0e80cc290f86a30af2.html
关键字词:
