body {
    width: 960px;
    height: 720px;
    padding: 30px;
    margin: 0 auto 0;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

p #source {
    width: 920px;
    height: 400px;
    padding: 10px;
    font-family: "Courier New", Courier, monospace;
    font-size: 24px;
    border: 3px solid green;
}

p button {
    font-size: 18px;
}

#p2 {
    display: none;
}

#myDiv {
    border: 1px solid black;
    min-height: 50px;
    padding: 5px;
}

*.myClass {
    margin: 100px;
    background-color: "#CCCCCC";
}