一个div实现白眼效果

巧妙利用border和background-clip

---

		<div class="eye"></div>

		.eye{
		  width:150px;
		  height:150px;
		  padding:10px;
		  border:10px solid;
		  border-radius:50%;
		  background-color: currentcolor;
		  background-clip: content-box;
		}