#popweixin {
    width:100%;
    height:100%;
    overflow:hidden;
    position:fixed;
    z-index:1000;
    background:rgba(0,0,0,.5);
    top:0;
    left:0;
    display:none;
}
#popweixin .tip {
    width:100%;
    background:#fff;
    z-index:1001;
}
.top2bottom {
    -webkit-animation:top2bottom 1.2s ease;
    -moz-animation:top2bottom 1.2s ease;
    -o-animation:top2bottom 1.2s ease;
    animation:top2bottom 1.2s ease;
    -webkit-animation-fill-mode:backwards;
    -moz-animation-fill-mode:backwards;
    -o-animation-fill-mode:backwards;
    animation-fill-mode:backwards
}
.animate-delay-1 {
    -webkit-animation-delay:1s;
    -moz-animation-delay:1s;
    -o-animation-delay:1s;
    animation-delay:1s
}
@-webkit-keyframes top2bottom {
    0% {
    -webkit-transform:translateY(-300px);
    opacity:.6
}
100% {
    -webkit-transform:translateY(0px);
    opacity:1
}
}@keyframes top2bottom {
    0% {
    transform:translateY(-300px);
    opacity:.6
}
100% {
    transform:translateY(0px);
    opacity:1
}