.public_block{
    width:1200px;
    height:100%;
    margin:auto;
    position: relative;
}
.out{
    width:100%;
    height:100%;
    background-image: url(../images/index_bg.jpg);
    background-size: 100% 100%;
    background-position: 0 0 ;
    background-repeat: no-repeat;
    position: relative;
}
.shizi_top{
    height:60px;
    width:100%;
    overflow: hidden;
    background: rgba(0,0,0,0.2)
}
.shizi_top h2{
    text-align: center;
    color:#fff;
    font-size: 24px;
    float:left;
}
.shizi_top .public_block,.shizi_content .public_block{
    overflow: hidden;
}
.shizi_top h2 img{
    height:40px;
    display: block;
    float:left;
    margin-top:10px;
}
.shizi_top h2 span{
    line-height: 60px;
    padding-left:12px;
}
.shizi_top ul{
    height:100%;
    overflow: hidden;
    max-width:calc(1200px - 290px);
    float:right;
}
.shizi_top li{
    float:left;
    padding:10px 12px;
}

.shizi_top li a{
    color:#fff;
    display: block;
    padding:8px 25px;
    background: #4395ff;
    border-radius: 5px;
    /* border:1px solid transparent; */
}
.shizi_top li a:hover{
    background:#fff;
    /* border-color:#fd9a05; */
    color:#fd8005;
}
.shizi_content{
    width:100%;
    height:400px;
    position: absolute;
    top:120px;
    left:0;
    right:0;
    bottom:0;
    margin:auto;
}

.content_img{
    width:48%;
    float:right;
    max-height:400px;
    display: block;
}
.content_left{
    width:50%;
    float:left;
    padding-right:20px;
}
.content_left p{
    color:#fff;
    margin:auto;
}
.content_left img{
    display: block;
}
.content_infor{
    width:100%;
    line-height: 32px;
    padding-bottom:40px;
    font-size: 24px;
    text-align: center;
}

.content_left img{
    width:200px;
    margin:auto;
    border-radius: 5px;
}
.content_right{
    width:50%;
    float:right;
    padding-top:40px;
}
.content_right p{
    font-size: 44px;
    font-weight: 800;
    padding:10px 0;
    color:#fff;
    text-align: center;
}
.content_right img{
    display: block;
    width:100%;
    margin:auto;
}
.teacher_tips{
    padding-top:10px;
    font-size: 12px;
    text-align: center;
    width:200px;
}
.technical_support{
    position: absolute;
    bottom:15px;
    left:0;
    right:0;
    width:100%;
    color:#4395ff;
    font-size: 12px;
    text-align: center;
}
.technical_support a{
    color:#fff;
    display: inline-block;
    padding-left:10px;
}
.technical_support .gongwang{
    padding-left:40px;
    position: relative;
}
.technical_support .gongwang::after{
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background-image: url(../images/bottom_icon_beian.png);
    background-size: 100% 100%;
    top: -1px;
    left: 15px;
    background-color: transparent;
}

/* 首页标题 */
.title-box {
    margin: 11% auto 0;
    font-size: 5.7vw;
    color: #fff;
    text-align: center;
    font-weight: 900;
}

/* 首页副标题 */
.sub-title-box {
    font-weight: 900;
    font-size: 5.2vw;
    display: flex;
    align-items: center;
    margin: 2.6% 0 0 11%;
    color: #4AFF0c;
    font-family: cursive;
}

.sub-title-box .text {
    margin-right: 4vw;
}

.danwei-box {
    position: fixed;
    bottom: 45px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.6vw;
    color: #fff;
    line-height: 2vw;
}

@media (max-width: 1000px){
    .content_right{
        padding-top:80px;
    }
}
@media (max-width: 1100px){
    .public_block{
        width:100%;
        padding:0 5%;
    }
    .content_left{
        width:40%;
    }
    .content_right{
        width:60%;
    }
}
@media (max-width: 880px){
    .public_block{
        padding:0 2%;
    }
}

@media (max-width: 768px){
    .shizi_content{
        position: unset;
        height:auto;
    }
    .content_left{
        padding:10% 0 0;
    }
    .content_left,.content_right{
        width:100%;
    }
    .shizi_top h2 span,.admin_li{
        display: none;
    }
    .out{
        overflow-y: auto
    }
    .content_right{
        padding:10% 0;
    }
}