body {
    margin: 0;
    padding: 0;
    overflow: hidden;
}

ul,
li,p {
    list-style: none;
    margin: 0;
    padding: 0;
}

a {
    color: #333;
    text-decoration: none;
}

.body1 {
    height: 100vh;
    overflow-y: scroll;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.body1::-webkit-scrollbar {
    display: none;
}
.nav_banner {
    width: 100%;
    position: relative;
}
.nav_banner .nav {
    width: 100%;
    height: 200px;
    background-color:#FFFFFF;
    z-index: 2;
}

.nav_banner .nav .nav-box {
    width: 1600px;
    margin: 0 auto;
}

.nav_banner .nav .nav_img {
    float: left;
    margin: 23px 0 0;
}

.nav_banner .nav .nav_time {
    float: right;
    margin: 56px 0 0 0;
}

.nav_banner .nav .nav_time img {
    margin-right: 37px;
}

.nav_banner .nav .nav_time span {
    font-family: "Arial","Microsoft YaHei","榛戜綋","瀹嬩綋",sans-serif;
    font-size: 20px;
    color: #333;
    letter-spacing: 1px;
    text-align: center;
    line-height: 26px;
    font-weight: 600;
    margin-right: 31.5px;
}

.nav_banner .nav .nav_time .one {
    letter-spacing: 0px;
    font-size: 24px;
    font-family: "Arial","Microsoft YaHei","榛戜綋","瀹嬩綋",sans-serif;
}

.nav_banner .nav .nav_time span:last-child {
    margin: 0;
}

.nav .nav-x {
    height: 1px;
    width: 100%;
    background: #A2A2A2;
    clear: both;
    margin-top: 19px;
}

.nav_list {
    width: 100%;
    display: flex;
    justify-content: center;
}

.nav_list ul {
    display: flex;
    margin-top: 16px;
    margin-left: 0px;
}

.nav_list ul li {
    margin: 0 32px;
    position: relative;
    height: 40px;
}

.nav_list ul li a {
    font-size: 20px;
    color: #333;
    letter-spacing: 1px;
    line-height: 28px;
    font-weight: 600;
    font-family: "Arial","Microsoft YaHei","榛戜綋","瀹嬩綋",sans-serif;
}

.nav_list ul li .bottom {
    width: 28px;
    height: 5px;
    background-color: #2E3192;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%, 0%);
    display: none;
}

.nav_list ul .on .bottom {
    display: block;
}
.nav_list ul .on a{
    color: #2E3192;
}
.nav_list ul li:hover .bottom {
    display: block;
}
.nav_list ul li:hover a {
    color: #2E3192;

}
.nav_banner .nav-bottom {
    position: absolute;
    z-index: 2;
    text-align: center;
    bottom: 26px;
    left: 50%;
    transform: translate(-50%, 0%);

}

.nav_banner .nav-bottom .bottom-txt {
    font-family: "Arial","Microsoft YaHei","榛戜綋","瀹嬩綋",sans-serif;
    font-size: 20px;
    color: #333;
    letter-spacing: 1px;
    font-weight: 500;
    margin-bottom: 5px;
}