.v0{text-align:center}
.v1{opacity:.6;position:fixed;right:0;bottom:0;font-size:28pt;width:48pt;height:44pt;padding-top:4pt;z-index:8;background:#aaa;color:#fff;text-shadow:0 -8pt 0 #aaa}
.v1:hover{opacity:.8;background:#888;cursor:pointer}
@media screen and (max-width:1200px){
.v1{font-size:78pt;width:98pt;height:98pt}

}