.headerpage{
    position: absolute;
    top: 0;
    z-index: 9;
}
.headerBg.headerpage{
    position: fixed;
    top: -70px;
    background-color: rgba(0,0,0,.86);
}
.homePage{
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow-y: scroll;
    overflow-x: hidden;
}
.mainImg{
    width: 100vw;
    margin-bottom: 60px;
}
.mainImg>img{
    width: 100vw;
}
.footerpage{
    vertical-align: middle;
}
/* 企业介绍样式 */
.brief-item>.page_w{
    margin: 0 auto;
}
.brief-item>.page_w>h2{
    margin:0 30px;
    font-size: 32px;
    font-family: PingFang SC;
    font-weight: bold;
    line-height: 36px;
    color: #000000;
    margin-bottom: 20px;
}
.brief-item>.page_w>p{
    margin:0 30px;
    font-size: 16px;
    font-family: PingFang SC;
    font-weight: 400;
    line-height: 36px;
    color: #000000;
    margin:0 30px;
}
.brief-item>.page_w>.itemtext-1{
    margin-bottom: 60px;
}
.brief-item>.page_w>.itemtext-2{
    margin-bottom: 100px;
}
.brief-item>.page_w>.imgBox{
    margin:0 30px 50px 30px;
}
.brief-item>.page_w>.imgBox>img{
    width: 100%;
}
/* 发展历程样式 */
.course-item{
    width: 100vw;
    background-color: #f9f9f9;
    padding: 70px 0 120px 0;
}
.course-item>.page_w{
    margin: 0 auto;
}
.course-item>.page_w>h2{
    margin:0 30px;
    font-size: 32px;
    font-family: PingFang SC;
    font-weight: bold;
    line-height: 50px;
    color: #333333;
}
.list-item{
    width: 100%;
    margin:0 30px;
    height: 780px;
    overflow: hidden;
    cursor: url('../assets/aboutUsImg/mouse.png'),move;
    position: relative;
}
/* .list-item::-webkit-scrollbar-thumb {
    border-radius: 6px;
    background: rgba(0,0,0,.3);
}
.list-item::-webkit-scrollbar-track {
    border-radius: 6px;
    background: rgba(0,0,0,.1);
} */
.list-item .noLineFeed{
    width: 3400px;
    overflow: hidden;
    position: absolute;
    left: 0px;
}
.list-item::-webkit-scrollbar {
    display: block;
    height: 12px;
}
.list-item .for-box{
    float: left;
}
.list-item .for-box>.headText{
    margin-bottom: 20px; 
    overflow: hidden;
}
.list-item .for-box>.headText>h4{
    font-size: 32px;
    font-family: PingFang SC;
    font-weight: 400;
    line-height: 50px;
    color: #37C2BB;
    margin-right: 20px;
    float: left;
}
.list-item .for-box>.headText>.line{
    height: 50px;
    width: 434px;
    float: left;
    position: relative;
}
.list-item .for-box:first-child>.headText>.line{
    width: 235px;
}
.list-item .for-box:first-child>.headText>.line::before{
    content:"";
    position: absolute;
    background-color: #CCCCCC;
    width: 8px;
    height: 1px;
    top: 50%;
    transform-origin:0 0;
    transform: rotate(-30deg);
}
.list-item .for-box>.headText>.line:after{
    content:"";
    position: absolute;
    background-color: #CCCCCC;
    width: 100%;
    height: 1px;
    top: 50%;
}
.list-item .for-box:last-child .line{
    display: none;
}
.list-item .for-box{
    margin-right: 20px;
}
.list-item .for-box>.month{
    font-size: 24px;
    font-family: PingFang SC;
    font-weight: 400;
    line-height: 38px;
    color: #333333;
    margin-bottom: 12px;
}
.list-item .for-box>.centent{
    width: 380px;
    font-size: 16px;
    font-family: PingFang SC;
    font-weight: 400;
    line-height: 30px;
    color: #000000;
    margin-bottom: 30px;
}
/* 移动端 */
@media screen and (max-width: 1400px){
    .brief-item>.page_w>p{
        margin-right: 50px;
        text-align: justify;
        font-size: 14px;
    }
    .brief-item>.page_w>.imgBox{
        margin:0 50px 50px 30px;
    }
}