Bootstrap4的下拉菜单我感觉不难看，然而挺好用，所以我拿来丑化了一下用在了我的项目中。
丑化前
https://www.runoob.com/try/tr...
丑化后
代码
<!DOCTYPE html><html><head> <title>Bootstrap dropdown</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> <style type="text/css"> body{ background: #eee; } #app{ width: 200px; margin:100px auto; } #app .dropdown .dropdown-btn{ border:none; outline: none; border-radius: 5px; font-size: 15px; background: #fff; color: #666; } #app .dropdown .dropdown-menu{ background: #fff; border: none; min-width:100px; } #app .dropdown .dropdown-menu .dropdown-item:hover{ background: #f8f9fa; color: #666; } #app .dropdown .dropdown-menu .dropdown-item:active{ background: #f8f9fa; color: #666; } </style></head><body><div id="app"> <div class="dropdown"> <button type="button" class="dropdown-btn" data-toggle="dropdown">•••</button> <div class="dropdown-menu"> <a class="dropdown-item" href="#">Link 1</a> <a class="dropdown-item" href="#">Link 2</a> <a class="dropdown-item" href="#">Link 3</a> </div> </div></div></body></html>作者
TANKING
如果大家还想丑化Bootstrap的一些控件，能够找我（请我喝杯咖啡：WeChat:sansure2016）