*
{
    border: none;
    margin: 0;
    padding: 0;
}

html, body, #background, #container
{
    height: 100%;
    width: 100%;
}

body
{
    background-color: rgb(0, 0, 0);
}

#background
{
    display: block;
    min-height: 348px;
    position: relative;
}

#container
{
    display: table;
    left: 0;
    position: absolute;
    top: 0;
}

#content
{
    display:table-cell;
    padding-bottom: 60px;
    vertical-align: middle;
}

#logo
{
    display: block;
    height: 256px;
    margin: auto;
    width: 256px;
}

#content-link
{
    height: 32px;
    margin: auto;
    /*width: 64px;*/
    width: 32px;
}

.link
{
    display: block;
    float: left;
    height: 32px;
    width: 32px;
}

/*#twitter-link
{
    background-image: url(image/twitter.png);
    background-size: 32px 32px;
}*/

#youtube-link
{
    background-image: url(image/youtube.png);
    background-size: 32px 32px;
}

.clear
{
    clear: both;
}

@media screen and (min-resolution: 2dppx),
       screen and (-webkit-min-device-pixel-ratio: 2)
{
    /*#twitter-link
    {
        background-image: url(image/twitter_2x.png);
    }*/

    #youtube-link
    {
        background-image: url(image/youtube_2x.png);
    }
}

@media screen and (min-resolution: 3dppx),
       screen and (-webkit-min-device-pixel-ratio: 3)
{
    /*#twitter-link
    {
        background-image: url(image/twitter_3x.png);
    }*/

    #youtube-link
    {
        background-image: url(image/youtube_3x.png);
    }
}

@media screen and (min-resolution: 4dppx),
       screen and (-webkit-min-device-pixel-ratio: 4)
{
    /*#twitter-link
    {
        background-image: url(image/twitter_4x.png);
    }*/

    #youtube-link
    {
        background-image: url(image/youtube_4x.png);
    }
}