h1 { font-family:sans-serif; text-align: center }
h2 { font-family:sans-serif }
td {padding: 0.5ex}
th {padding: 0.5ex}
.left-column { float:left; width:45%; margin:2% }
.right-column { float:right; width:45%; margin:2% }
.full-width { width:100%; clear:both }
.center { margin-left:auto; margin-right:auto }