Javascript完全排除なCSS時計です。 使い方:◀▶で時刻合わせ This is a Javascript-Free Pure CSS Clock. please adjust the time with the two triangle buttons. <link rel='stylesheet' href='style.css'> <div class='main'> <div class='clock_center'> <div class='up'>▶</div> <div class='down'>◀</div> <div class='c1'><div class='numpos'><div class='num'>1</div></div></div> <div class='c2'><div class='numpos'><div cl