* {
    margin: 0;
    padding: 0;
}

body, html {
    width: 100%;
    height: 100%;
}

body {
    background: no-repeat -webkit-image-set(
        url('background.jpg') 1x,
        url('background@2x.jpg') 2x
        ) center;
    font-family: 'HelveticaNeue-Thin', 'Helvetica Neue';
    font-weight: 200;
    font-size: 16px;
    line-height: 1.5;
    color: #666;
    text-align: center;
    text-rendering: optimizeLegibility;
}

a {
    text-decoration: none;
    color: #666;
}

a.active {
    text-decoration: underline;
}

a:hover {
    text-decoration: underline;
}

#navigation {
    width: 100%;
    position: absolute;
    padding: 8px 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid #EEE;
    z-index: 1000;
}

#navigation a {
    margin: 0 5px;
    padding: 0 5px;
}

#core {
    width: 600px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -80px 0 0 -320px;
    padding: 20px;
    z-index: 900;
}