使用方法:
1、head引入css文件
<link rel="stylesheet" href="css/style.css"/>
2、body引入部分
<div class="container"> <div id="app"> <div class="pause"> <div class="line line_1"></div> <div class="line line_2"></div> </div> <div class="play active"> <div class="line line_1"></div> <div class="line line_2"></div> <div class="line line_3"></div> </div> </div> </div> <script src="js/script.js"></script>