* {
    margin: 0;
    padding: 0;
}
header {
    background-color:rgba(33, 33, 33, 0.9);
    color:#fff;
    display:block;
    font: 14px/1.3 Arial,sans-serif;
    height:50px;
    position:relative;
}
header h2{
    font-size: 22px;
    margin: 0px auto;
    padding: 10px 0;
    width: 80%;
    text-align: center;
}
header a, a:visited {
    text-decoration:none;
    color:#fcfcfc;
}
body {
    background:url("../images/bg.jpg") no-repeat scroll top center transparent;
}
.main_body {
    margin: 175px auto 0;
    position: relative;
    width: 460px;
}
.element {
    float: left;
    height: 230px;
    width: 230px;
}