.main-img-box{
    width:100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #d2e2f2;
    overflow: hidden;
}
.main-img-box img{
    width: 1900px;
    height: 200px;
}
.main-nav-box{
    width:100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color:#fff;
}
.main-nav-box .width1200{
    height:50px;
    display: flex;
    align-items: center;
}
.main-nav-box .mainNavLi a,
.main-nav-box .mainNavLi{
    height:50px;
    width: 150px;
    text-align: center;
    line-height: 50px;
    color: #333;
    font-size: 16px;
    box-sizing: border-box;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.main-nav-box .mainNavLi:hover{
    background-color: rgba(200,200,200,.1);
    
}
.main-nav-box .mainNavLi.activeBox i{
    position: absolute;
    border:1px solid #2882FF;
    background-color: #2882FF;
    border-radius:10px;
    height:2px;
    width:100%;
    left:0;
    bottom:-2px;
}
.main-box .company_main_item{
   background-color:#fff;
   min-height:500px;
   display: flex;
   justify-content: center;
   padding:30px 20px;
   box-sizing: border-box;
}
.footer-box{
    margin:0;
}