h2不行啊

 #st-control-1:checked ~.st-scroll #st-scroll #st-panel-1 h2,

 #st-control-2:checked ~.st-scroll #st-scroll #st-panel-2 h2,

 #st-control-3:checked ~.st-scroll #st-scroll #st-panel-3 h2,

 #st-control-4:checked ~.st-scroll #st-scroll #st-panel-4 h2,

 #st-control-5:checked ~.st-scroll #st-scroll #st-panel-5 h2{

-webkit-animation:moveDown 2s ease-in-out 0.5s backwards;

-moz-animation:moveDown 2s ease-in-out 0.5s backwards;

-o-animation:moveDown 2s ease-in-out 0.5s backwards;

-ms-animation:moveDown 2s ease-in-out 0.5s backwards;

animation:moveDown 2s ease-in-out 0.5s backwards;/*backwards动画播放之前处于开始状态*/

 } 

@-webkit-keyframes moveDown{

0%{

-webit-transform:translateY(-40px);

opacity:0;

}

100%{

-webkit-transform:translateY(0px);opacity:1;

}

}