body {font-family:arial,helvetica; font-size:13px; line-height:1.5;}
sup, sub {vertical-align:0;position:relative;}
sup { bottom: 1ex; }
sub { top: 0.8ex; }
h1 {font-size:17px;}
table, th, td {font-size:13px;}
div.ex
{
padding:10px;
border:1px solid black;
margin:0px;
}