纯css3 hover鼠标移上去分享按钮变化颜色和线框动画特效。

使用方法

1、head引入css文件

<!--图标库-->
<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'>

<!--主要样式-->
<link rel="stylesheet" href="css/style.css">

2、body引入部分

<ul>
  <li> 
	  <a class="facebook" href="#"> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <i class="fa fa-facebook" aria-hidden="true"></i> 
	  </a> 
	</li>
  <li> 
	  <a class="twitter" href="#"> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <i class="fa fa-twitter" aria-hidden="true"></i> 
	  </a> 
	</li>
  <li> 
	  <a class="instagram" href="#"> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <i class="fa fa-instagram" aria-hidden="true"></i> 
	  </a> 
	</li>
  <li> 
	  <a class="google" href="#"> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <span></span> 
		  <i class="fa fa-google-plus" aria-hidden="true"></i> 
	  </a> 
	</li>
</ul>

资源出处：https://www.moyublog.com/codes/83.html