body {
    background-color: #000000;
    color: red;
}
h1 {
    font-weight: bold;
    font-size: 2.5em;
    font-family: impact, georgia;
    text-align: center;
}
div#wrapper {
    width: 900px;
    margin: 20px auto;
}


div#thumbnail_1 {
    background-image: url(http://ads.boundgods.com/imagedb/7853/v/h/320/7853_5.jpg);
    width: 427px;
    height: 240px;
    float: left;
    margin: 10px;
    border: 1px solid white;
}
div#thumbnail_2 {
    background-image: url(http://ads.nakedkombat.com/imagedb/7783/v/h/320/7783_5.jpg);
    width: 427px;
    height: 240px;
    float: left;
    margin: 10px;
    border: 1px solid white;
}

div#thumbnail_3 {
    background-image: url(http://ads.boundgods.com/imagedb/7389/v/h/320/7389_5.jpg);
    width: 427px;
    height: 240px;
    float: left;
    margin: 10px;
    border: 1px solid white;
}
div#thumbnail_4 {
    background-image: url(http://ads.nakedkombat.com/imagedb/7689/v/h/320/7689_3.jpg);
    width: 427px;
    height: 240px;
    float: left;
    margin: 10px;
    border: 1px solid white;
}
div#thumbnail_5 {
    background-image: url(http://ads.boundgods.com/imagedb/7695/v/h/320/7695_6.jpg);
    width: 427px;
    height: 240px;
    float: left;
    margin: 10px;
    border: 1px solid white;

}
div#thumbnail_6 {
    background-image: url(http://ads.nakedkombat.com/imagedb/7885/v/h/320/7885_4.jpg);
    width: 427px;
    height: 240px;
    float: left;
    margin: 10px;
    border: 1px solid white;
}
a.right {
    display: block;
    padding-right: 10px;
    float: right;
    margin-top: 100px;
    font-weight: bold;
    font-size: 1.2em;
    font-family: impact;
    visibility: hidden;
}
a.left {
    display: block;
    padding-left: 10px;
    float: left;
    margin-top: 100px;
    font-weight: bold;
    font-size: 1.2em;
    font-family: impact;
    visibility: hidden;
}

div#thumbnail_1:hover a {
    color: red;
    visibility: visible;
}
div#thumbnail_2:hover a {
    color: magenta;
    visibility: visible;
}
div#thumbnail_3:hover a {
    color: red;
    visibility: visible;
}
div#thumbnail_4:hover a {
    color: magenta;
    visibility: visible;
}
div#thumbnail_5:hover a {
    color: red;
    visibility: visible;
}
div#thumbnail_6:hover a {
    color: magenta;
    visibility: visible;
}


div#thumbnail_1:hover {
    border: 1px solid red;
}
div#thumbnail_2:hover {
    border: 1px solid magenta;
}
div#thumbnail_3:hover {
    border: 1px solid red;
}
div#thumbnail_4:hover {
    border: 1px solid magenta;
}
div#thumbnail_5:hover {
    border: 1px solid red;
}
div#thumbnail_6:hover {
    border: 1px solid magenta;
}