styles.css

BODY {
    /* IE10 Consumer Preview */
    background-image: -ms-radial-gradient(center top, ellipse farthest-side, #FFFFFF 0%, #1AB6EF 100%);

    /* Mozilla Firefox */
    background-image: -moz-radial-gradient(center top, ellipse farthest-side, #FFFFFF 0%, #1AB6EF 100%);

    /* Opera */
    background-image: -o-radial-gradient(center top, ellipse farthest-side, #FFFFFF 0%, #1AB6EF 100%);

    /* Webkit (Safari/Chrome 10) */
    background-image: -webkit-gradient(radial, center top, 0, center top, 425, color-stop(0, #FFFFFF), color-stop(1, #1AB6EF));

    /* Webkit (Chrome 11+) */
    background-image: -webkit-radial-gradient(center top, ellipse farthest-side, #FFFFFF 0%, #1AB6EF 100%);

    /* W3C Markup, IE10 Release Preview */
    background-image: radial-gradient(ellipse farthest-side at center top, #FFFFFF 0%, #1AB6EF 100%);
}

H1 {
    text-align: center;
}

#examples {
    padding-left: 10px;
}

.endingRemark {
    margin-top: 30px;
}

DIV.example {
    margin-top: 50px;
}

DIV.example ul {
    width: 500px;
}

A {
    color: green;
}

A.decorate {
    text-decoration: underline;
}

#disqus_thread {
    margin: 10px;
    padding: 20px;
    background: #fff;
}