CSSWidget/CSS-Dropdown.html at master · lingcarzy/CSSWidget · GitHub

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<html>
<head>
    <title>CSS-Dropdown</title>
    <style>
        .menu{width: 100%; list-style: none; display: inline; margin: 0; padding: 10px 0 12px 0;color: #fff;}
        .menu li{display: inline-block; position: relative; padding: 10px 20px; cursor: pointer;background: rgba(0,0,0,0.6);}
        .menu li:hover { background: rgba(0,0,0,0.8);}

        .dropdown{position: relative;}
        .dropdown-menu{
              display: none;
              opacity: 0;
              visibility: hidden;
              position: absolute;
              width: 200%;
              margin-top: 10px;
              padding: 0;
              background: #fff;
          }
        .dropdown-left{left: 0;}
        .dropdown-right{right: 0;}
        .dropdown-menu li{
            display: block;
            color: #fff;
        }
        .dropdown-menu li:hover{
            display: block;
            color: #fff;
        }
        .dropdown:hover > .dropdown-menu{
            display: block;
            opacity: 1;
            visibility: visible;
        }
    </style>
</head>
<body>
    <ul class='menu'>
        <li class='dropdown'>
            <span>menu 1</span>
            <ul class="dropdown-menu dropdown-left">
                <li>dropdown-menu11</li>
                <li>dropdown-menu12</li>
                <li class="dropdown">
                    <span>dropdown-menu13 drop-menu</span>
                    <ul class="dropdown-menu">
                        <li>dropdown-menu131</li>
                        <li>dropdown-menu132</li>
                        <li>dropdown-menu133</li>
                    </ul>
                </li>
            </ul>
        </li>
        <li>
            <span>menu 2</span>
        </li>
        <li class='dropdown'>
            <span>menu 3</span>
            <ul class="dropdown-menu dropdown-right">
                <li>dropdown-menu31</li>
                <li>dropdown-menu32</li>
                <li>dropdown-menu33</li>
            </ul>
       </li>
    </ul>
</body>
</html>