.space-v {
    padding-top:10px;
    padding-bottom:10px;
}

.space-h {
    padding-left:10px;
    padding-right:10px;
}

/* 公告 */
#announce {
    position:relative;
    z-index:0;
    width:100%;
    overflow:hidden;
}

.back-roate{
    position:absolute;
    z-index:-1;
    width:100%;
    height:100%;
    background:linear-gradient(#fff,#cccccc);
    animation: announce 6s infinite linear;
    border-radius: 5%;
}

.content-with-roate-back {
    width:98%;
    height:100%;
    background-color: #fff;
    margin:1%;
}

/* 公告旋转 */
@keyframes announce {
    0% {
        transform: rotateZ(0);
    }
    100% {
        transform: rotateZ(360deg);
    }
}