html  {background:black; color:white; text-align:center;}
h1,h2 {display:inline;}
table {margin:auto;}
svg   {background:#202020; border:1px solid white;}
.btnh1{font-size:5vw;}
.btnh2{font-size:4vw;}
a:link { text-decoration: none;}
#foot {position:fixed; bottom:0;left:0;right:0}