#d{font-size:40px;font-family:arial}button[data-action=INCREMENT]{padding:10px;background:green;color:#fff}button[data-action=DECREMENT]{padding:10px;background:red;color:#fff}button[data-action=RESET]{padding:10px;background:gray;color:#fff}button[data-action=ADD_FOUR]{padding:10px;background:teal;color:#fff}button[data-action=DOUBLE]{padding:10px;background:purple;color:#fff}