flash---动画

第一种方式：flash-动画

CSS代码为：

.pages .p3 img{ width: 100%;}
.item-01{ position: absolute; left: 20px; top: 50px; width: 100px;-webkit-animation: flash 2s ease 0s infinite both;}
.item-02{ position: absolute; left: 120px; top: 50px; width: 100px;-webkit-animation: flash 2s ease 0.5s infinite both;}
.item-03{ position: absolute; left: 220px; top: 50px; width: 100px;-webkit-animation: flash 2s ease 0.8s infinite both;}
@-webkit-keyframes flash{
  0%,50%,100%{opacity:1}
  25%,75%{opacity:0}
}
@keyframes flash{
  0%,50%,100%{opacity:1}
  25%,75%{opacity:0}
}
.flash{-webkit-animation-name:flash;animation-name:flash}

本地效果为：app/html5_animation/flash.html