.banner{
    background-image: url('../img/u3327.png?v=20230809');
    background-repeat: no-repeat;
    background-position: 100% 100%;
    height: 240px;
    display: block;
    margin-top: 80px;
    padding-top: 50px;
    box-sizing: border-box;
}
.banner_desc{
    width: 1200px;
    min-width: 1200px;
    margin: 0 auto;
}
.banner_desc h2{
    font-size: 28px;
    color: #FFFFFF;
    margin-bottom: 25px;
}
.banner_desc p{
    line-height: 25px; 
    font-size: 14px;
    color: #FFFFFF;
    width: 800px;
}
.company_box{
    width: 1200px;
    min-width: 1200px;
    margin: 0 auto;
}
.company_box img {
    height: 55px;
}
.company_box{
    margin-top: 50px;
}
.company_box li{
    width: 580px;
    border: 1px solid #e4e4e4;
    margin-bottom: 40px;
    padding: 25px;
    box-sizing: border-box;
    line-height: 25px;
}
.company_box li h3{
    font-weight: 700;
    font-style: normal;
    font-size: 16px;
    font-family: '微软雅黑 Bold', '微软雅黑 Regular', '微软雅黑';
    margin: 21px 0;
}
@media (max-width: 1500px) {
    .banner{
        background-position: 35% 100%;
    }
} 
@media (min-width: 1500px) and (max-width: 1800px) {
    .banner{
        background-position: 50% 100%;
    }
}