.header{
    background: url(/assets/images/xunzhan2023/banner.jpg) no-repeat;
    background-position: center, center;
    background-size: cover;
}
.bottom_bg{
    background: url(/assets/images/xunzhan2023/banner_lower.png);
}
.section_top .top_title_en{
    color: rgba(36, 148, 249, 0.3);
}
.posi_tab{
    background: #071956;
}
.tour_container .section_background{
    background: #000634;

}
.section_participants{
    background: #000634;
}
.section_reward{
    background: #000634;
}
.participants_grid .grid_item{
    background-color: rgba(7, 34, 91, 0.3) ;
}
.participants_grid .grid_item:hover{
    background-color: rgba(7, 25, 86, 1) ;
}
.harvest_box .harvest_item{
    background-color: rgba(7, 34, 91, 0.3) ;
}
.harvest_box .harvest_item:hover{
    background: linear-gradient(270deg, #367BF0 0%, #3B87F3 20%, #3E94F6 40%, #40A0F9 60%, #41ACFC 80%, #41B9FF 100%);
}
.join_function{
    background-color: rgba(2, 14, 63, 1) ;
}
.alertWindow{
    height: 620px;
}
.form_submitBtn_wrap{
    margin-top: 8px;
}
@media screen and (max-width: 969px){
    .alertWindowDownload .form_submitBtn_wrap{
        margin-top: 8px;
    }
}
@media screen and (max-width: 768px){
    .header {
        height: 400px;
    }
}
@media screen and (max-width: 440px){
    .header {
        height: 340px;
    }
}