程式碼

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>CSS3_MARQUEE</title>

    <style>
        .marquee {
            width: 450px;
            margin: 0 auto;
            overflow: hidden;
            white-space: nowrap;
            box-sizing: border-box;
            animation: marquee 50s linear infinite;
        }

        .marquee:hover {
            animation-play-state: paused
        }

        /* Make it move */
        @keyframes marquee {
            0%   { text-indent: 27.5em }
            100% { text-indent: -105em }
        }

        /* Make it pretty */
        .microsoft {
            padding-left: 1.5em;
            position: relative;
            font: 16px 'Segoe UI', Tahoma, Helvetica, Sans-Serif;
        }

        /* ::before was :before before ::before was ::before - kthx */
        .microsoft:before, .microsoft::before {
            z-index: 2;
            content: '';
            position: absolute;
            top: -1em; left: -1em;
            width: .5em; height: .5em;
            box-shadow: 1.0em 1.25em 0 #F65314,
                        1.6em 1.25em 0 #7CBB00,
                        1.0em 1.85em 0 #00A1F1,
                        1.6em 1.85em 0 #FFBB00;
        }

        .microsoft:after, .microsoft::after {
            z-index: 1;
            content: '';
            position: absolute;
            top: 0; left: 0;
            width: 2em; height: 2em;
            background-image: linear-gradient(90deg, white 70%, rgba(255,255,255,0));
        }
    </style>
</head>
<body>
    <p class="microsoft marquee">Windows 8 and Windows RT are focused on your life—your friends and family, your apps, and your stuff. With new things like the <a href="http://windows.microsoft.com/en-US/windows-8/start-screen">Start screen</a>, <a href="http://windows.microsoft.com/en-US/windows-8/charms">charms</a>, and a <a href="http://windows.microsoft.com/en-US/windows-8/microsoft-account">Microsoft account</a>, you can spend less time searching and more time doing.</p>
</body>
</html>

效果