.animated {
	-webkit-animation-duration: 1s;
	animation-duration: 1s;
	-webkit-animation-fill-mode: both;
	animation-fill-mode: both
}

@-webkit-keyframes flash {
    0%,100%,50% {
        opacity: 1
    }

@keyframes flash {
    0%,100%,50% {
        opacity: 1
    }

.flash {
    -webkit-animation-name: flash;
    animation-name: flash
}

事例代码： <div class="animated flash">测试</div> ;flash 可以用其它动作名称代替