菜单的实现代码，具体代码如下所述：

Meta charset="UTF-8"> * { padding: 0; margin: 0; ul { list-style: none; .wrap { width: 730px; height: 50px; margin: 100px auto 0; background-color: lightgray; padding-left: 10px; border-radius: 10px; padding-bottom: 3px; .wrap li { float: left; width: 130px; height: 50px; margin-right: 10px; position: relative; .wrap a { margin-top: 3px; color: gray; text-decoration: none; display: block; width: 130px; height: 50px; text-align: center; line-height: 50px; font-size: 21px; border-radius: 10px; .wrap li ul { position: absolute; display: none; .wrap li ul li { margin-top: 3px; .wrap li ul li a:hover{ color: red;