.s_ertab {
    width: 100%;
    display: flex;
    justify-content: center;
    font-size: 18px;
    color: #fff;
}

.s_ertab .nav_tab.active_tab {
    background: #e30c20;
}

.s_ertab .nav_tab {
    width: 33.33%;
    height: 50px;
    text-align: center;
    line-height: 50px;
    cursor: pointer;
    background: #e0e9f5;
}

.s_ertab .nav_tab img {
    width: 220px;
}

.s_ertab .nav_tab:nth-child(1) {
    width: 33.33%;
    height: 50px;
    border-radius: 10px 0px 0px 10px;
}

.s_ertab .nav_tab:nth-child(3) {
    width: 33.33%;
    height: 50px;
    border-radius: 0px 10px 10px 0px;
}

.s_tab_nav_one {
    /* display: none; */
}

.s_tab_nav_one p {
    font-size: 14px;
    color: #4c4c4c;
    line-height: 2.2;
    margin-top: 20px;
}

.s_tab_nav_one .st2 p {
    margin-top: 0px
}

.s_tab_nav_one .st2 .tit {
    margin-top: 10px;
    margin-bottom: -4px;
}

.jishufuwu {
    color: #4c4c4c;
}

.jishufuwu>div {
    margin-bottom: 20px;
}

.jishufuwu span {
    display: block;
    margin-bottom: 10px;
}

.s_tab_nav_two {
    display: none;
    margin-top: 76px;
}

.nav_two_list {
    margin-bottom: 40px;
}

.nav_two_list .two_title {
    width: 182px;
    height: 38x;
    background: #266cff;
    color: #fff;
    text-align: center;
    line-height: 38px;
    font-size: 14px;
    position: relative;
    margin-bottom: 20px;
}

.nav_two_list p {
    color: #4c4c4c;
    line-height: 2;
}

.nav_two_list .two_title::after {
    position: absolute;
    top: 0;
    content: "";
    width: 0;
    height: 0;
    right: -21px;
    border-top: 19px solid transparent;
    border-left: 21px solid #266cff;
    border-bottom: 19px solid transparent;
}

.nav_two_list:nth-child(2) .two_title::after {
    position: absolute;
    top: 0;
    content: "";
    width: 0;
    height: 0;
    right: -21px;
    border-top: 19px solid transparent;
    border-left: 21px solid #ffab63;
    border-bottom: 19px solid transparent;
}

.nav_two_list:nth-child(3) .two_title::after {
    border-left: 21px solid #53d290;
}

.nav_two_list:nth-child(2) .two_title {
    background: #ffab63;
}

.nav_two_list:nth-child(3) .two_title {
    background: #53d290;

}

.s_tab_nav_three {
    margin-top: 80px;
    display: none;
}

.thr_nav {

    position: relative;
    width: 1117px;
    height: 401px;
    background: #e30c20;
    border-radius: 4px;
    box-shadow: -4px 0px 16px 4px undefined;
    margin: 0 auto;
}
.thr_nav img{
    width: 712px;
    height: 442px;
    position: absolute;
    top: -60px;
}
.thr_nav .msg{
    position: absolute;
    right: 60px;
    top: 80px;
}
.thr_nav .msg p:nth-child(1){
    font-size: 30px;
}
.thr_nav .msg p{
    color: #fff;
    font-size: 24px;
}