body {margin:0; padding:3px; background-color:#ccc;}
table {width:100%; height:100%; border-spacing:1px;}
td {background-color:#aaa; border:1px solid #666; text-align:center;}
.x {background-color:#c61;}
.o {background-color:#778;}
.x1 {background-color:rgba(204,102,17,0.45);}
/*td:nth-child(1n) {visibility:hidden;}*/