css 導航菜單+下拉菜單

時間 2019-12-07

原文原文鏈接

1、導航菜單

1.橫向導航

代碼以下：css

<!doctype html>
<html>
<head>
    <meta charset="utf-8"/>
    <title>橫向導航菜單</title>
    <style>
        body{
            margin:0;
        }
        ul{
            list-style-type:none;
            background-color: #f3f3f3;
            position: fixed; 
            overflow:hidden;
            margin:0;
            padding:0;
            width:100%;
            position:fixed;
            border-bottom:1px solid #e7e7e7;
        }
        ul li{
            float:left;
            text-align: center;

        }
        ul li a{
            color:#666;
            text-decoration:none;
            padding:8px 16px;
            display:block;
            width:60px;
        }
        ul li a:hover{
            background-color:#ddd;
            
        }
        ul li:last-child{
            float:right;
            border-right:none;
        }
        li:last-child {
            border-bottom: none;
        }
        .active {
            background-color: #4CAF50;
            color: white;
        }

    </style>
    <link rel="stylesheet" type="text/css" href="demo02.css"/>

</head>
<body>
    <ul>
        <li><a href="#" class="active">首頁</a></li>
        <li><a href="#">新聞</a></li>
        <li><a href="#">聯繫</a></li>
        <li style="f"><a href="#">關於</a></li>
    </ul>    
    <div style="padding:20px;background-color:#1abc9c;height:1500px;">
        <h1>Fixed Top Navigation Bar</h1>
        <h2>Scroll this page to see the effect</h2>
        <h2>The navigation bar will stay at the top of the page while scrolling</h2>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
        <p>Some text some text some text some text..</p>
    </div>
</body>
</html>

效果圖：
html

2.豎嚮導航

代碼以下：ide

<!doctype html>
<html>
<head>
    <meta charset="utf-8"/>
    <title></title>

    <style>
        body{
            margin:0;
        }
        ul{
            list-style-type:none;
            background-color: #f1f1f1;
            width: 25%;
            height: 100%;
            position: fixed; 
            overflow: auto; 
            margin:0;
            padding:0;
        }
        ul li{
             text-align: center;
        }
        ul li a{
            color:#000;
            text-decoration:none;
            padding:8px 16px;
            display:block;
        }
        li:last-child {
            border-bottom: none;
        }
        .active {
            background-color: #4CAF50;
            color: white;
        }
        div{
            margin-left:25%;
            padding:1px 16px;
            height:1000px;
        }
    </style>
</head>
<body>
    <ul>
        <li><a href="#" class="active">首頁</a></li>
        <li><a href="#">新聞</a></li>
        <li><a href="#">聯繫</a></li>
        <li><a href="#">關於</a></li>
    
    </ul>    
    <div>
        <h2>Fixed Full-height Side Nav</h2>
          <h3>Try to scroll this area, and see how the sidenav sticks to the page</h3>
          <p>Notice that this div element has a left margin of 25%. This is because the side navigation is set to 25% width. If you remove the margin, the sidenav will overlay/sit on top of this div.</p>
          <p>Also notice that we have set overflow:auto to sidenav. This will add a scrollbar when the sidenav is too long (for example if it has over 50 links inside of it).</p>
          <p>Some text..</p>
          <p>Some text..</p>
          <p>Some text..</p>
          <p>Some text..</p>
          <p>Some text..</p>
          <p>Some text..</p>
          <p>Some text..</p>
</div>
</body>
</html>

效果圖：
this

2、下拉菜單

display：none和display：block切換實現

代碼以下：spa

<!doctype html>
<html>
<head>
    <meta charset="utf-8"/>
    <title></title>

    <style>
        body{
            margin:0;
            text-align:center;
        }
        .dropdown{
            
            background-color:green;
            text-align:center;
            padding:20px;
            display:inline-block;
            cursor:pointer;
            position:relative;
        }
        .di{
            display:none;
            position:absolute;
            top:61px;
            left:0;
        }
        .di ul{
            list-style:none;
            padding:0;
            margin:0;
            background-color: #f9f9f9;
        }
        .di ul li{
            min-width:104px;
            padding:10px 15px;
            
        }
        .dropdown:hover{
            background-color:#3e8e41
        }
        .dropdown:hover .di{
            display:block;
            
        }
        .di ul li:hover{
            background-color: #f1f1f1
        }
    </style>

</head>
<body>
    <div class="dropdown">
        <span>
            下拉菜單
        </span>
        <div class="di">
            <ul>
                <li>你好！</li>
                <li>我好！</li>
                <li>你們好！</li>
            </ul>
        </div>
    </div>

</body>
</html>

效果圖：
code

持續更新，歡迎各位指教！

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