/* Minesweeper board — the only custom CSS for this game (everything else is Bootstrap).
   The page has a single <table>, so the bare element selectors are safe here. */
table { border-collapse: collapse; margin: 0 auto; }
td {
	width: 100px;
	height: 100px;
	border: 1px solid #000;
	text-align: center;
	vertical-align: middle;
}
td input,
td img { width: 100%; height: 100%; }
.active { background-color: red; }