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Pure css code to achieve simple drop-down menu effect

王林forward: 2020-09-03 16:54:502126browse

Implementation method:

(Recommended tutorial: CSS tutorial)

1. Write an association using ul and li tags Structure (the parent-child relationship between ul and li is natural, and they are used in general association structures)

<ul class="nav">
    <a href="#">服装</a>
    <ul class="plat">
        <li><a href="#">衬衫</a></li>
        <li><a href="#">棉袄</a></li>
        <li><a href="#">裤衩</a></li>
    </ul>
</ul>

2. Initialize the interface (a million-dollar beginning)

      *{
            padding: 0;
            margin: 0;
        }

3. Give ul and a Add styles to tags (you can play freely here)

 ul,a{
            font-size: 20px;
            list-style: none;
            text-decoration: none;
            background-color: #3C3C3C;
            color: #FFFFFF;
            width: 100px;
            text-align: center;
            border: 0px solid black;
            border-radius: 5px;  /*圆角*/
            margin-top: 1px;
        }
        a{
            display: block;
        }

4. Hide the content of the .plat part

.plat{
            display: none;
        }

5. (Here comes the highlight) Use:hover for the first a tag Selector; implementation function: when the mouse moves over the a tag, the hidden part of the content is visible

.nav:hover .plat{
            display: block;
            clear: both;
        }

6. So far, the function has been implemented. You can add your own styles to optimize the user experience

For example:

Menu bar arranged horizontally:

.nav{
             float: left;
             margin-left: 1px;
         }

Mouse slide over the column to remind its position

`.plat li:hover>a{
            background-color: dimgrey;
        }`

Effect:

Pure css code to achieve simple drop-down menu effect

（ Learning video recommendation: css video tutorial)

All codes:

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        ul,a{
            font-size: 20px;
            list-style: none;
            text-decoration: none;
            background-color: #3C3C3C;
            color: #FFFFFF;
            width: 100px;
            text-align: center;
            border: 0px solid black;
            border-radius: 5px;
            margin-top: 1px;
        }
        a{
            display: block;
        }

        .plat{
            display: none;
        }
        .nav{
             float: left;
             margin-left: 1px;
         }
        .nav:hover .plat{
            display: block;
            clear: both;
        }
        .plat li:hover>a{
            background-color: dimgrey;
        }
    </style>
</head>
<body>
<ul>
    <a href="#">服装</a>
    <ul>
        <li><a href="#">衬衫</a></li>
        <li><a href="#">棉袄</a></li>
        <li><a href="#">裤衩</a></li>
    </ul>
</ul>
<ul>
    <a href="#">服装</a>
    <ul>
        <li><a href="#">衬衫</a></li>
        <li><a href="#">棉袄</a></li>
        <li><a href="#">裤衩</a></li>
    </ul>
</ul>
<ul>
    <a href="#">服装</a>
    <ul>
        <li><a href="#">衬衫</a></li>
        <li><a href="#">棉袄</a></li>
        <li><a href="#">裤衩</a></li>
    </ul>
</ul>
</body>
</html>

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