1. 引入CSS
<link rel="stylesheet" href="css/style.css">
2. 引入JS
<script src="js/script.js"></script>
3. HTML代码
<div class="container"> <div class="input_box"> <label label_id="input1">用户名</label> <input type="text" name="" placeholder="用户名" input_id="input1"> </div> <div class="input_box"> <label label_id="input2">密码</label> <input type="password" name="" placeholder="密码" input_id="input2"> </div> <button class="btn"> <span class="btn_txt">登录</span> <div class="circle one"></div> <div class="circle two"></div> <div class="circle three"></div> <div class="circle four"></div> </button> </div>