#app{
    padding-top: 66px;
}
.header{
    height: 66px;
    width: 100%;
    margin: 0 auto;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 3;
    background: #fff;
}
.header .container{
    width: 1177px;
    margin: 0 auto;
}
.logo{
    width: 159px;
    height: 66px;
    float: left;
}
.banner{
    width: 100%;
}
.banner img{
    width: 100%;
}
.nav{
    color: #8bb928;
    font-size: 18px; 
    float: right;
    margin-right: 150px;
    height: 66px;

}
.nav li{
    float: left;
    margin-left: 30px;
    height: 40px;
    line-height: 40px;
    margin-top: 13px;
}
.nav li.active{
    color: #de7e0e;
}
.nav li.active::after{
    content: '';
    display: block;
    width: 20px;
    height: 2px;
    background: #de7e0e;
    margin: -4px auto;
}
.item{
    padding-top: 50px;
    color: #585858;
    font-size: 24px;
    box-sizing: border-box;
    overflow: hidden;
}
.item .title{
        position:relative;
        width: 240px;
        display:block;
        text-align:center;
        font-size: 32px;
        padding:0 0px 0;
        margin: 16px auto;
        line-height:1px;
        border-left: 40px solid #585858;
        border-right: 40px solid #585858;
        height:1px;
        box-sizing:border-box;
       font-weight: 400;
}
.item .subtitle{
    font-size: 18px;
    text-align: center;
    margin-bottom: 55px;
}
.item .container{
    width: 1077px;
    padding: 0 50px;
    margin: 0 auto;
}
.item.about-us{
    background: #de7e0e;
    color: #fff;
    padding-bottom: 130px;
}
.about-us .title{
    border-left: 40px solid #fff;
    border-right: 40px solid #fff;
}
.about-us h3{
    font-size: 30px;
    font-weight: 400;
    margin: 10px;
}
.item p{
    font-size: 24px;
    line-height: 37px;
}

.company{
    height: 460px;
    background: url(../img/bg1.jpg) no-repeat;
    background-size: 100% auto;
    background-position: -155px bottom;
    font-size: 24px;
    color: #585858;
}



.contact-us{
    height: 566px;
    background: url(../img/bg2.jpg) no-repeat;
    background-size: auto 100%;
    background-position: -155px bottom;
    font-size: 24px;
    color: #585858;
}
.contact-us .scan{
    width: 715px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}
.contact-us .scan div{
    width: 289px;
    text-align: center;
}
.contact-us .scan img{
    width: 289px;
    height: 289px;
    display: block;
    border-radius: 5px;
    border: 1px solid #000;
}
.contact-us .scan p {
    margin-top: 15px;
}

footer{
    width: 100%;
    height: 75px;
    background: #8bb928;
    font-size: 18px;
    line-height: 25px;
    color: #fff;
    text-align: center;
    padding: 32.5px 0;
}