html {
    background: url(/images/bg.jpg) no-repeat center center fixed #000;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}
.index-header {
    text-align: center;
}
#x_axis {
    width: 100%;
    height: 1px;
    position: absolute;
    top: 50%;
}
#y_axis {
    height: 100%;
    width: 1px;
    position: absolute;
    left: 50%;
}
#y_axis_line {
    height: 100%;
    width: 1px;
    position: absolute;
    left: 50%;
    top: 0px;
}
#links a {
    padding: 0px;
    margin: 0px;
    z-index: 100;
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    color: #FFF;
    text-decoration: none;
}