td {
    background-color: #FFFFFF;
    text-align: center;
}

th {
    background-color: #FFFFFF;
    text-align: center;
}

table {
    position: absolute;
    width: 70%;
    margin-left:  15%;
    margin-right : 15%
}

body {
    /* The image used */
    position: absolute;
    background-image: url("carpark.jpg");
    height:100%;
    width: 100%; 
    /* Center and scale the image nicely */
    background-position: center;
}