html,
body {
    font-size: 18px;
    overflow-x: clip;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    margin: 0;
    padding: 0;
    background-color: #f3f3f3;
}

a {
    color: #2d2e2f;
    outline: none;
    text-decoration: none;
}

a:link {
    text-decoration: none;
}

a:visited {
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

a:active {
    text-decoration: none;
}

a:focus {
    text-decoration: none;
}

.nav_item .nav_con {
    top: 70px !important;
}

/* =================================================== */

.contact {
    max-width: 1920px;
    height: 1200px;
    padding: 0;
    margin: 0 auto;
}
.contact-con{
    width: 1202px;
    margin: 0 auto;
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
}
.contact-con>div{
    width: 381px;
    height: 556px;
    border-radius: 20px;
    background: url(../img/cooperation-bg.png) no-repeat;
}
.contact-con>div div{
    width: 63px;
    height: 3px;
    background-color: #0047a2;
    margin: 0 auto;
    margin-bottom: 35px;
}
.contact-con>div h2,
.co-banner-bottom>div:nth-child(1) h2{
    height: 118px;
    line-height: 118px;
    font-size: 28px;
    font-weight: 600;
    color: #0047a2;
    text-align: center;
}
.contact-con>div p{
    font-size: 20px;
    height: 40px;
    line-height: 35px;
    color: #737373;
    text-align: center;
}
.contact-con>div:nth-child(2){
    background: url(../img/cooperation-bg2.png) no-repeat;
}
.contact-con>div:nth-child(3){
    background: url(../img/cooperation-bg3.png) no-repeat;
}
.co-banner-bottom{
    margin: 0 auto;
    margin-top: 40px;
    width: 1200px;
    height: 524px;
    background: url(../img/contact-bottom.png) no-repeat;
    display: flex;
} 
.co-banner-bottom>div:nth-child(1){
    position: relative;
    width: 390px;
    height: 524px;
}
.co-banner-bottom>div:nth-child(1) h2{
    position: absolute;
    top: 46px;
    left: 135px;
}
.co-banner-bottom>div:nth-child(1) div{
    position: absolute;
    top: 165px;
    left: 135px;
    width: 64px;
    height: 2px;
    background-color: #0047a2;
    margin-bottom: 35px;
}
.co-banner-bottom>div:nth-child(2){
    width: 750px;
    height: 524px;
}
.liuyan_info{
    display: flex;
    margin-top: 47px;
    position: relative;
    margin-left: 100px;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-between;
}
.liuyan_info p{
    display: flex;
    color: #333;
    flex-direction: column;
    margin-right: 40px;
    width: 280px;
    justify-content: flex-end;
    flex-wrap: wrap;
}
.liuyan_info input{
    height: 40px;
    border-bottom: 1px solid #ccc;
    font-size: 16px;
    color: #666;
}
.liuyan_info .error {
	color:#4415f5;
}
#content{
    width: 600px;
    height: 45px;
    border-bottom: 1px solid #ccc;
    font-size: 16px;
    color: #666;
}
.checkcode label{
    height: 54px;
    line-height: 54px;
}
.checkcode{
    display: flex;
    justify-content: space-between;
}
.checkcode img{
    margin-left: 28px;
}
.submit{
    color: #fff !important;
    border: none;
    border-radius: 5px;
    width: 160px;
    height: 40px;
    background-color: #0048a2;
    position: absolute;
    top: 55px;
    left: 428px;
}

@media screen and (max-width: 900px) {
    .banner-con img {
        position: absolute;
        width: auto;
        height: 100%;
        object-fit: cover;
        right: -39vw;
    }
    .contact {
        height: auto;
        min-width: 335px;

    }
    .contact-con {
        width: 100%;
        flex-direction: column;
    }
    .contact-con>div {
        margin: 15px auto;
        padding: 20px;
        height: auto;
        width: 96%;
        background-position: center;
    }

    .contact-con>div:nth-child(2),
    .contact-con>div:nth-child(3)
    {
        background: url(../img/cooperation-bg.png) no-repeat;
        background-position: center;
    }
    
    .contact-con>div h2, .co-banner-bottom>div:nth-child(1) h2 {
        padding-top: 0;
        height: 60px;
        line-height: 70px;
        font-size: 26px;
        position: relative;
        top:unset;
        left: unset;
    }
    .contact-con>div div {
        margin-bottom: 20px;
    }
    .contact-con>div p {
        font-size: 18px;
    }
    .co-banner-bottom {
        width: 96%;
        height: auto;
        flex-direction: column;
        padding: 20px 20px;
        border-radius: 20px;
        background-size: cover;
        margin: 20px auto 40px auto;
    }
    .co-banner-bottom>div:nth-child(1) {
        width: 100%;
        height: 60px;
    }
    .co-banner-bottom>div:nth-child(1) div {
        top: unset;
        left: unset;
        text-align: center;
        position: relative;
        margin: 0 auto;
        height: 3px;
    }
    .co-banner-bottom>div:nth-child(2) {
        width: 100%;
        height: auto;
    }
    .co-banner-bottom>div:nth-child(2) form {
        display: flex;
        flex-direction: column;
    }
    .liuyan_info {
        margin-left: unset;
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-between;
    }
    .liuyan_info p {
        margin-right: unset;
        width: 48%;
    }
    #content {
        width: 100%;
    }
    .co-banner-bottom>div:nth-child(2) form .liuyan_info:nth-child(4) {
        display: flex;
        width: 100%;
        flex-direction: column;
    }
    .co-banner-bottom>div:nth-child(2) form .liuyan_info:nth-child(3) p {    
        width: 100%;
    }
    .checkcode img {
        margin: unset;
    }
    .co-banner-bottom>div:nth-child(2) form .liuyan_info:nth-child(4) p:nth-child(2) {
        align-items: start;
        position: relative;
        justify-content: flex-end;
        align-content: center;
        flex-wrap: wrap;
        width: 100%;
        margin: 30px 0;
    }
    .submit {
        position: relative;
        left: 0;
        top: 0;
    }

}