@media screen and (max-width:768px) {
    .bannerbg{
        background: url(../images/huodong/huodong_bgmb.jpg) no-repeat 50% 100%;
        height: 300px;
        margin-top: 60px;
        background-size: 100%;
        background-color: #ffffff;
    }
    .huodong_logo{
        width: 80%;
        /*text-align: center;*/
    }
    .chakanzt{
        position: relative;
        bottom: -280px;
        color: #000000 !important;
    }
}

@media screen and (min-width: 769px) {
    .bannerbg{
        background: url(../images/huodong/huodong_bg.png) no-repeat 50% 100%;
        margin-top: 60px;
        background-color: #f5f5f5;
        height: 880px;
    }
    .huodong_logo{
        width: 600px;
        /*text-align: center;*/
    }
    .chakanzt{
        position: relative;
        bottom: -780px;
    }
    .chakanzt a{
        color: #ffffff !important;
    }
}
.tebiehuodong_bt{
    margin:20px auto;
}
.tebiehuodong_zw{
    margin-bottom:20px;
    padding-left: 20px;
    padding-right: 20px;
}
.eachactivity{
    margin-bottom: 40px;
}
.xmhdtp{
    width: 100%;
    border-radius: 10px;
}