9-8 CSS3中设置动画的播放状态

@keyframes move { 0%{ transform: translateY(90px); } 15%{ transform: translate(90px,90px); } 30%{ transform: translate(180px,90px); } 45%{ transform: translate(90px,90px); } 60%{ transform: translate(90px,0); } 75%{ transform: translate(90px,90px); } 90%{ transform: translate(90px,180px); } 100%{ transform: translate(90px,90px); } } div { width: 200px; height: 200px; border: 1px solid red; margin: 20px auto; } span { display: inline-block; width: 20px; height: 20px; background: orange; transform: translateY(90px); animation-name: move; animation-duration: 10s; animation-timing-function: ease-in; animation-delay: .2s; animation-iteration-count:infinite; animation-direction:alternate; animation-play-state:paused; } div:hover span { ?:running; }