/* this is for the main container of the table, also sets the height of the fixed header row */
.alpha          { overflow: auto; height: 100px; }
.alpha thead th { position: sticky; top: 0; z-index: 1; background:#ddd; }

.beta           { overflow: auto; height: 30px; }
.beta thead th { position: sticky; top: 0; z-index: 1; background:#ddd; }

/* Just common table stuff. Really. */
th, td { border: 1px solid; }
td     { font-size: 13px; line-height: 13px; color: black; }
table  { border: 1px solid; }