/*环境*/
.xh_hj {
    min-width: 1400px;
}

.xh_hj .w_25 a {
    float: left;
    width: 25%;
}

.xh_hj .w_25 a div {
    width: 100%;
    height: 272px;
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    border: 2px solid #fff;
}

.xh_hj .w_25 a div img {
    width: 100%;
}

.xh_hj .w_25 a div em {
    position: absolute;
    bottom: -50px;
    left: 0;
    right: 0;
    margin: auto;
    line-height: 50px;
    text-align: center;
    color: #fff;
    background-color: rgba(0, 0, 0, .4);
    transition: .4s;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.xh_hj .w_25 a span {
    transition: .3s;
    display: block;
    text-align: center;
    line-height: 50px;
    color: #666666;
    font-size: 16px;
    background-color: #fff;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    border-left: 2px solid #fff;
    border-right: 2px solid #fff;
}

.xh_hj .w_25 a:hover span {
    background-color: #2891ff;
    color: #fff;
}

.xh_hj .w_25 a:hover em {
    bottom: 0;
}

/*切换选项卡*/
.tab_bar .tabs {
    text-align: center;
    padding: 30px 0;
}

.tab_bar .tabs li {
    display: inline-block;
    cursor: pointer;
    width: 114px;
    height: 40px;
    line-height: 40px;
    font-size: 20px;
    margin: 0 16px;
    border: 1px solid #3d3d3d;
}

.tab_bar .tabs li.active {
    color: #fff;
    background-color: #3d3d3d;
}

/*字体*/
.f48 {
    font-size: 48px;
    text-align: center;
}
.f32 {
    font-size: 32px;
    text-align: center;
}

.f24 {
    font-size: 24px;
}

.f22 {
    font-size: 22px;
}

.f21 {
    font-size: 15px;
    text-transform: uppercase;
}

.f20 {
    font-size: 18px;
}

.f18 {
    font-size: 18px;
}

.f16 {
    font-size: 16px;
}

/*行高*/
.l_26 {
    line-height: 26px;
}