*{
    margin: 0 0;
    padding: 0 0;
}
.relevance_content_back {
    width: 100%;
    height: 500px;
    background: url(../images/background/relevancebanner.png);
    background-size: 100% 100%;
}
.relevance_img{
    width: 100%;
}
.relevance_img img {
    width: 100%;
}
.relevance_content_main_nav {
    margin: 33px 0 33px 359px;
}
.c999{
    color: #999999;
}
.c34a{
    color: #34a1ec;
}
.font14{
    font-size: 14px;
}
@media screen and (max-width: 3000px) and (min-width: 901px) {
    .hearder-move{
        display: none;
    }
    .footer-move{
        display: none;
    }
    .background{
        display: none;
    }
}
@media screen and (max-width:900px) {
    .header-bigbox{
        display: none;
    }
    .footer-top{
        display: none;
    }
    .relevance_content_main_nav{
        display: none;
    }
    .relevance_content_back{
        display: none;
    }
    .background {
        width: 100%;
        height: 105pt;
        background-image: url(../images/官网首页/inbannerc.png);
        background-size: 100% 100%;
        background-repeat: no-repeat;
        margin-bottom: 30pt;
      }
}