img{vertical-align: top;}
.about-1-left{background: url('../picture/about1.png');width: 31.25%;position: relative;padding-top: 50px;}
@media screen and (min-width:1900px){
    .about-1-left{
        padding-left: 18.75%;
    }
}
@media screen and (max-width:1899px){
    .about-1-left{
        width: 46%;
        padding-left: 4%;
    }
}
@media screen and (max-width:1300px){
    .about-1-left{
        width: 600px;
        padding-left: 0;
    }
}
.about-1-left span{display: block;position: absolute;}
.about-1-left span:nth-of-type(1){color: #fff;right: 0;top: 10px;letter-spacing: 10px;}
.about-1-left span:nth-of-type(2){font-size: 40px;opacity: 0.2;color: #fff;text-transform: uppercase;top: 30px;}
.about-1-left p{color: #fff;margin-bottom: 20px;line-height: 26px;font-size: 18px;}
.about-1-right{width: 600px;}
.about-1-right ul{justify-content: space-between;margin-left: 18px;}
.about-1-right ul+ul{margin-top: 20px;}

.about-2{background: url('../picture/aboutus9.jpg');margin-top: 20px;}
.about-2 >p{width: 800px;color: #fff;margin: 0 auto;text-align: center;padding: 150px;line-height: 26px;font-size: 18px;}


.about-3{margin-top: 20px;position: relative;}
.about-3-left{width: 50%;justify-content: space-between;}
.about-3-right{width: 32.75%;background-color: #d5e9fb;position: absolute;right: 0;height: 100%;z-index: -1;padding-right: 17.25%;line-height: 26px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
}
@media screen and (max-width:1600px){
    .about-3-right{
        width: 40%;
        padding-right: 10%;
    }
}
@media screen and (max-width:1400px){
    .about-3-right{
        width: 50%;
        padding-right: 0;
    }
}
.about-3-right>div{width: 94%;line-height: 28px;}
.about-3-right ul li a{color: #289fe5;margin-left: 20px;}
.about-3-right ul li a:hover{text-shadow: 2px 2px 6px #289fe5} 
.about-3-left>div:nth-of-type(1){width: 53%;}
.about-3-left>div:nth-of-type(2){width: 45%;margin-left: 2%;}
.aboutul1,.aboutul2,.aboutul3{justify-content: space-between;}
.aboutul1 li{width: 35%;}
.aboutul1 li:nth-of-type(1){width: 24.5%;}
.aboutul2 li{width: 51%;margin-top: 14px;}
.aboutul1 li img,.aboutul2 li img{width: 100%;}
.aboutul2 li:nth-of-type(2){width: 45.9%;}
.aboutul3 li:nth-of-type(1){width: 42%;}
.aboutul3 li:nth-of-type(2){width: 55.44%;}
.aboutul4 li{margin-top: 10px;}