HTML+CSS - 导航栏下拉菜单

<div class="main">
        <div class="nav">
            <ul>
                <li><a href="#">项目一</a>
                    <ul>
                        <li><a href="#">分类一</a></li>
                        <li><a href="#">分类二</a></li>
                        <li><a href="#">分类三</a></li>
                        <li><a href="#">分类四</a></li>
                        <li><a href="#">分类五</a></li>
                    </ul>
                </li>
                <li><a href="#">项目二</a></li>
                <li><a href="#">项目三</a></li>
                <li><a href="#">项目四</a></li>
                <li><a href="#">项目五</a></li>
                <li><a href="#">项目六</a></li>
            </ul>
        </div>
    </div>
<style>
    *{
       margin: 0;
       padding: 0;
    }
    .main{
        width: 100%;
        height: 60px;
        background-color: #eee;
    }
    .nav{
        width: 1000px;
        height: 60px;
        background-color: lightblue;
        margin: 0 auto;
    }
    .nav ul{
       list-style-type: none;
       background-color: pink;
       line-height: 60px;
       text-align: center;
    }
    .nav ul li{
        display: inline-block;
        padding: 0 50px;
        position: relative;
    }
    .nav ul li a{
        text-decoration: none;
        font-size: 20px;
        font-family: Arial, Helvetica, sans-serif;
        color: #fff;
    }
    .nav ul li ul{
        display: none;
        position: absolute;
        left: 0;
        text-align: center;
        line-height: 60px;
    }
    .nav ul li:hover ul{
        display: block;
    }
    .nav ul li ul li{
        width: 60px;
        padding: 0 20px;
        border-bottom: 2px solid transparent;
    }

    .nav ul li ul li:hover{
        border-bottom: 2px solid rgb(241, 159, 214);
    }
    .nav ul li ul li a{
        font-size: 20px;
    }
    .nav ul li ul li a:hover{
        color: rgb(241, 159, 214);
    }
    
</style>

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转载自blog.csdn.net/weixin_45959965/article/details/128350931