div#header
{
        background-color: crimson ;
        border:2px solid black;
}

body
{
    background: grey url(https://www.shelbystore.com/v/vspfiles/photos/LD-SHELBY-COBRA-2.jpg) no-repeat fixed;
    float: center;
}


div#link
{
    background-color: white;
    border: 5px solid black;
    float: left;
    width: 150px;
    height: 100px;
}


div#content
{
    background-color: mediumslateblue;
    border: 2px solid black;
    float: center;
}

*{
    box-sizing: content-box;
}

.photo
{
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}

a:visited
{
    color: grey;
}
a:active
{
    color: orange;
}