先从HTML: 旋转按钮 和现在的CSS: .button { background:#aaa; color:#555; font-weight:bold; font-size:15px; padding:10px 15px; border:none; margin:50px; cursor:pointer; -webkit-transition:-webkit-transform 1s,opacity 1s,background 1s,width 1s,height 1s,font-size 1s; -o-transition-property:width,height,-o-trans