div#digital-clock {
    font-weight: bold;
    font-size: 50px;
    color: white;
    background: yellow url(moonR4_1108_0.png) no-repeat center;
    text-align: center;
    width: 500px;
    height:300px;

    padding: 40px 0 25px 0;
    border: 2px #000000 solid;
}