3D按钮

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>3D按钮DEMO演示</title>
        <style type="text/css">
            /* start da css for da buttons */
             .btn {
                border-radius: 5px;
                padding: 15px 25px;
                font-size: 22px;
                text-decoration: none;
                margin: 20px;
                color: #fff;
                position: relative;
                display: inline-block;
            }
            .btn:active {
                transform: translate(0px, 5px);
                -webkit-transform: translate(0px, 5px);
                box-shadow: 0px 1px 0px 0px;
            }
            .blue {
                background-color: #55acee;
                box-shadow: 0px 5px 0px 0px #3C93D5;
            }
            .blue:hover {
                background-color: #6FC6FF;
            }
        </style>
    </head>
    <body>
        <!-- start the realm of the buttons -->
        <a href="#" class="btn blue">Button</a>
    </body>
</html>
https://www.html5tricks.com/