html, body {
 background-image: url("images/waterwaves.jpg");
 background-size: cover;
 background-repeat: no-repeat;
}
#mainbox {
    margin: auto;
    padding-top:0;
    padding-left:20px;
    padding-right:20px;
    padding-bottom:10px;
    background: rgba(0, 104, 156, 0.7);
    border: white 7px solid;
    width:900px;
font-family: monospace;
color: white;
}
a {
color: red;
}