【CSSで動きを出す】hover ,active,focus の使い方.btn0{ font-size:20px; display: inline-block; text-decoration: none; color: #fff; width: 120px; height: 120px; line-height: 120px; border-radius:50%; border:double 5px #000000; text-align:center; vertical-align: middle; overflow: hidden; transition: .6s;background:#C5C5C5; } .btn0:hover{ -webkit-transform:rotateY(360deg); -ms-transform:rotateY(360deg); transform:rotateY(360deg); color:#000000; bac
