css3动画写了兼容但是一些安卓手机还是没作用。

@keyframes down {

    0% {

        height: 75px

    }

    100% {

        height: 225px

    }

}

.moveDown {

    -webkit-animation-name: down;

    -webkit-animation-duration: .5s;

    -webkit-animation-iteration-count: 1;

    -webkit-animation-timing-function: ease-in-out;

    -webkit-animation-delay: 0;

    -webkit-animation-direction: alternate;

    -webkit-animation-fill-mode: forwards;

    -moz-animation-name: down;

    -moz-animation-duration: .5s;

    -moz-animation-iteration-count: 1;

    -moz-animation-timing-function: ease-in-out;

    -moz-animation-delay: 0;

    -moz-animation-direction: alternate;

    -moz-animation-fill-mode: forwards;

    -ms-animation-name: down;

    -ms-animation-duration: .5s;

    -ms-animation-iteration-count: 1;

    -ms-animation-timing-function: ease-in-out;

    -ms-animation-delay: 0;

    -ms-animation-direction: alternate;

    -ms-animation-fill-mode: forwards;

    animation-name: down;

    animation-duration: .5s;

    animation-iteration-count: 1;

    animation-timing-function: ease-in-out;

    animation-delay: 0;

    animation-direction: alternate;

    animation-fill-mode: forwards

}