MediaWiki:Go.css

div#gotop {
    background: lightgray;
    border-radius: 124px;
    top: 748px;
    color: white;
    font-size: 38px;
    padding: 0px;
    position: fixed;
    left: 80px;
    width: 41px;
    height: 40px;
    line-height: 1.09;
    text-align: center;
}

div#goback {
    background: black;
    top: 0px;
    color: yellow;
    font-size: 34px;
    padding: 0px;
    position: fixed;
    left: 142px;
    width: 36px;
    height: 40px;
    line-height: 1.3;
    text-align: center;
}

div#gotop a, div#gotop a:visited { color: inherit !important; text-decoration: none !important; 
} 
div#goback a, div#goback a:visited { color: inherit !important; text-decoration: none !important;
}
p.go {
    line-height: 1.4em;
    margin: 5px;
    font-size: 30pt;
    text-indent: 0.00cm;
    font-weight: normal;
    text-align: center;
    text-align-last: center;
    padding: 0px;
    color: #e10101;
}