Example of using HTML+CSS to implement a secondary menu bar when the mouse is moved

This article introduces an example of using HTML+CSS to implement a secondary menu bar when the mouse is moved. The details are as follows:

First, the effect picture:

1. The mouse is not on it

2. Place the mouse on the first-level menu to expand the second-level menu

3. Place the mouse on the secondary menu

Code:

<html>
<head>
    <title>Secondary menu test</title>
    <meta charset="utf-8">
    <style type="text/css">

    /*To center the menu*/
    body {
        padding-top:100px;
        text-align:center; 
    }
    
    
    /* -------------Menu css code----------begin---------- */
    .menuDiv { 
        border: 2px solid #aac; 
        overflow: hidden; 
        display:inline-block;
    }
    
    /* Remove the underline of the a tag*/
    .menuDiv a {
        text-decoration: none;
    }
    
    /* Set the style of ul and li */
    .menuDiv ul , .menuDiv li {
        list-style: none;
        margin: 0;
        padding: 0;
        float: left;
    } 
    
    /* Set the secondary menu to absolute positioning and hide it*/
    .menuDiv > ul > li > ul {
        position: absolute;
        display: none;
    }

    /* Set the style of the li of the secondary menu */
    .menuDiv > ul > li > ul > li {
        float: none;
    }
  
    /* Put the mouse on the first-level menu to display the second-level menu*/
    .menuDiv > ul > li:hover ul {
        display: block;
    }

    /* First level menu */
    .menuDiv > ul > li > a {
        width: 120px;
        line-height: 40px;
        color: black;
        background-color: #cfe;
        text-align: center;
        border-left: 1px solid #bbf;
        display: block;
    }
    
    /* In the first level menu, do not set the left border */
    .menuDiv > ul > li:first-child > a {
        border-left: none;
    }

    /* In the first level menu, the style of the mouse on it*/
    .menuDiv > ul > li > a:hover {
        color: #f0f;
        background-color: #bcf;
    }

    /* Secondary menu */
    .menuDiv > ul > li > ul > li > a {
        width: 120px;
        line-height: 36px;
        color: #456;
        background-color: #eff;
        text-align: center;
        border: 1px solid #ccc;
        border-top: none;
        display: block;
    }
    
    /* In the secondary menu, the first one sets the top border*/
    .menuDiv > ul > li > ul > li:first-child > a {
        border-top: 1px solid #ccc;
    }
    
    /* In the secondary menu, the style of the mouse on it*/
    .menuDiv > ul > li > ul > li > a:hover {
        color: #a4f;
        background-color: #cdf;
    }
    /* -------------Menu css code----------end---------- */
    
    </style>
</head>
<body>

    <!-- -------Menu html code---------begin------- -->
    <div class="menuDiv">
        <ul>
            <li>
                <a href="#">Menu 1</a>
                <ul>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                </ul>
            </li> 
            <li>
                <a href="#">Menu 2</a>
                <ul>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                </ul>
            </li> 
            <li>
                <a href="#">Menu Three</a>
                <ul>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                </ul>
            </li> 
            <li>
                <a href="#">Menu 4</a>
            </li> 
            <li>
                <a href="#">Menu Five</a>
                <ul>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                    <li><a href="#">Secondary Menu</a></li>
                </ul>
            </li> 
        </ul>
    </div>
    <!-- -------Menu html code---------end------- -->
    
</body>
</html>

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

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