.nav_two {
    z-index: 9;
}
.nav_two .searc input {
    outline: none;
    border: 1px solid;
    margin-left: 5px;
    padding-left: 5px;
    padding-top: 5px;
    padding-bottom: 5px;
}.banner {
    width: 100%;
}
.banner img {
    display: block;
    width: 100%;
}
 .nav1 .nav_menu1 .mt a{
     margin-bottom: 10px;
 }
.nav {
    width: 100%;
    padding-bottom: 120px;
}
.nav .w {
    width: 100%;
    display: flex;
    justify-content: space-between;
}
.nav .w .cont-left {
    width: 20%;
    position: relative;
    top: -72px;
}
.nav .w .cont-left p {
    display: block;
    margin: 0 auto;
    padding-bottom: 10px;
    width: 80%;
    text-align: left;
    border-bottom: 1px solid #456ec9;
    /*padding:0 20px;*/
    font-size: 30px;
}
.nav .w .cont-left span {
    display:block;
    margin: 0 auto;
    width: 80%;
    text-align: left;
    font-size: 16px;
    color: #8da6de;
}
.nav_menu1 .mt a:hover {
    background-color: #19419b;
    color: #FFFFFF;
}
.nav1>img {
    display: block;
    width: 100%;
    margin-top: 20px;
}
.nav .w .cont-right {
    width: 78%;
    margin-top: 100px;
}
.nav .w .cont-right>p {
    font-size: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid #CCCCCC;
}
.nav .w .cont-right ul {
    width: 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.nav .w .cont-right ul li {
    width: 29%;
    text-align: center;
    margin-top: 50px;
}
.nav .w .cont-right ul li img {
    display: block;
    margin: 0 auto;
}
.nav .w .cont-right ul li p{
    font-size: 16px;
    color: #1d84e4;
    padding-bottom: 30px;
    margin-top: 5px;

}
.nav .w .cont-right ul li span {
    display: inline-block;
    line-height: 30px;
    font-size: 18px;
}
.nav .w .cont-right ul li:nth-child(1) p{
    padding-bottom: 20px;
}
.mao {
    width: 100%;
}
.nav .w .cont-right iframe {
   display: block;
    width: 100%;
    height: 500px;
}
@media screen and (max-width: 955px){
    .nav .w .cont-right ul li {
        width: 48%;
    }
    .nav .w .cont-right>p {
        text-align: center;
    }
}
@media screen and (max-width: 768px){
    .nav .w .cont-left p {
        font-size: 18px;
        padding-bottom: 3px;
    }
    .nav .w .cont-left span {
        font-size: 14px;
    }
    .nav .w .cont-left {
        width: 20%;
        position: relative;
        top: -38px;
    }

}
@media screen and (max-width: 585px){
    .nav .w .cont-right ul li span {
        font-size: 14px;
    }
    .nav .w .cont-right ul li p {
        font-size: 12px;
    }
    .nav .w .cont-right iframe {
        display: block;
        width: 100%;
        height: 400px;
    }
    .nav .w .cont-right {
        width: 78%;
        margin-top: 30px;
    }

}
@media screen and (max-width: 450px){
    .nav .w .cont-right ul li {
        width: 100%;

    }
    .nav .w .cont-right iframe {
        display: block;
        width: 100%;
        height: 300px;
    }
}