How to implement drop-down menu with pure CSS-CSS Tutorial-php.cn

How to implement drop-down menu with pure CSS

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Release： 2018-03-20 14:25:06

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This time I will show you how to implement a drop-down menu with pure CSS. What are the precautions for implementing a drop-down menu with pure CSS? Here is a practical case, let’s take a look.

This article mainly introduces the sample code for implementing the drop-down menu in pure CSS, and shares it with everyone. The details are as follows:

Set the ul height of the drop-down menu to 0, and hide the excess part.

Set the height of the drop-down menu and add

Transition effect. When the height is auto, the transition effect will be invalid.

<style>
    ul{
        list-style: none;
        margin: 0;
        padding: 0;
    }
    ul li a{
        display: block;
        text-decoration: none;
        width: 100px;
        height: 50px;
        text-align: center;
        line-height: 50px;
        color: white;
        background-color: #2f3e45;
    }
    .drop-down{
        width: 100px;
        height: 50px;
    }
    .drop-down-content{
        opacity: 0;
        height: 0;
        overflow: hidden;
        transition: all 1s ease;
    }
    p{
        font-size: 20px;
        margin: 0;
    }
    .drop-down-content li:hover a{
        background-color: red;
    }
    .nav .drop-down:hover .drop-down-content{
        opacity: 1;
        height: 150px;
    }
</style>
<ul class="nav">
    <li class="drop-down">
        <a href="#">下拉菜单</a>
        <ul class="drop-down-content">
            <li><a href="#">菜单1</a></li>
            <li><a href="#">菜单2</a></li>
            <li><a href="#">菜单3</a></li>
        </ul>
    </li>
</ul>
<p>内容</p>

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The renderings are as follows:

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!