body 		{ background:gray; color:white; margin:0px;} 
svg  			{ background:blue;} 
.trhead		{ background:black; color:white;}
.treven		{ background:darkgray; color:ivory;}
.trodd		{ background:lightgray; color:orange;}
a[href$=".zip"] {background:url(../_img/ico/zip.gif) transparent center left no-repeat; padding-left: 18px;}