input { background-color: #cde; width: 4em }
pre  { vertical-align: top; display: inline-block; padding-left: 1em}
table#tbl { background-color: #def; display: inline-block; }
table#tbl td {  padding: 8px;  }
table#control td {  padding: 4px;  }
pre span { display: inline-block; text-align: center; color: orange; font-weight: bold; width: 4em}