.banner {
    width: 100%;
}
.banner a {
    width: 100%;
}
.banner> a > div {
    float: left;    
    height: 630px;
    background-color: #111;
    margin-bottom: 50px;
}
.banner > a .left{
    width: 70%;
}
.banner > a .right{
    width: 30%;
}
.banner > a .right > .s_time{
    color: #777;
    font-size: 16px;
    margin-top: 45%;
}
.banner> a .right>.s_time>span{
    margin-right: 10px;
}
.banner > a .right > p ,.banner > a .right > .s_btn a{
    color: white;
}
.banner > a .right > p {
    font-size: 30px;
    margin: 30px auto;
}
.b_btn {
    display: flex;
    flex-wrap: wrap;
    pointer-events: none;
    margin-top: 35px;
}
.b_btn > li {
    margin-right: 20px;
    margin-bottom: 25px;
}
.b_btn > li > a {
    color: #ccc;
    padding: 5px 15px;
    border: 1px solid #666;
    border-radius: 2em;
    text-decoration: none;
    pointer-events: auto;
}
.b_btn > li > a:hover{
    border: 1px solid white;
}
/* title_page */
.title_page p{
    padding-bottom: 50px;
    text-align: center;
    line-height: 40px;
    letter-spacing: 3px;
    font-size: 16px;
}
/* 内容 */
.content{
    width: 100%;
    /*height: 1100px;*/
    background-color: #f7f7f7;
}
.content_title {
    font-size: 16px;
    padding-left: 20%;
    padding-top: 50px;
}
.news_details{
    width: 70%;
    overflow: hidden;
    margin: 0 auto;
}
.news_details> ul> li{
    float: left;
    width: 30%;
    height: 430px;
    margin-left: 25px;
    margin-top: 50px;
    background-color: #fff;
}
.news_details> ul> li a {
    width: 100%;
    height: 100%;
}
.news_details >ul >li > a img{
    width: 100%;
}
.news_details >ul >li > a .s_time{
    margin: 25px;
}
.news_details >ul >li > a .s_time  > span{
    margin-right: 7px;
    color: #999;
    font-size: 12px;
    font-weight: 600;   
}
.news_details >ul >li> a h2{
    margin: 0 25px;
    letter-spacing: 3px;
    font-size: 16px;
    line-height: 25px;
}
.news_details >ul >li> a h3{
    margin: 20px 25px 0;
    /*margin-top: 20px;*/
    letter-spacing: 3px;
    font-size: 14px;
}
.s_btn {
    display: flex;
    flex-wrap: wrap;
    pointer-events: none;
    margin-left: 23px;
    margin-top: 35px;
}
.s_btn > li {
    margin-right: 20px;
    margin-bottom: 25px;
}
.s_btn > li > a {
    color: #888;
    padding: 5px 15px;
    border: 1px solid #ccc;
    border-radius: 2em;
    text-decoration: none;
    pointer-events: auto;
}
.s_btn > li > a:hover{
    border: 1px solid #000;
    color: #000;
}

.news_details> ul> li a:hover h2{
    color: #888;
}