.case_swiper img {
    width: 100%;
    display: block;
}

.swiper-container-free-mode>.swiper-wrapper {
    -webkit-transition-timing-function: linear;
    /*之前是ease-out*/
    -moz-transition-timing-function: linear;
    -ms-transition-timing-function: linear;
    -o-transition-timing-function: linear;
    transition-timing-function: linear;
}

.b_title {
    text-align: center;
    margin-bottom: 50px;
}

.b_title h3 {
    color: rgb(83, 180, 73);
    font-size: 24px;
}

.banner {
    overflow: hidden;
}

.banner li {
    display: inline-block;
    position: relative;
    width: 350px !important;
}

.banner li a {
    display: block;
    padding: 10px;
}

.banner li img {
    display: block;
    width: 100%;
}

.b_cover {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0%;
    left: 0%;
    background-image: url(../images/imageEffetc_magnifier.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: auto;
    z-index: 1;
    opacity: 0;
    transition-duration: .5s;
}

.banner li:hover .b_cover {
    opacity: 1;
}

.b_more {
    margin: 30px 0px;
    text-align: center;
}

.b_more a {
    display: inline-block;
    width: 135px;
    line-height: 40px;
    background-color: rgb(83, 180, 73);
    color: #fff;
    font-size: 12px;
    text-align: center;
    border-radius: 5px;
}


/* 遮罩层 */

.banner_cover {
    position: fixed;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
    background-color: #000;
    z-index: 2;
    display: none;
}

.banner_c_main {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    /* margin: 0 auto; */
    width: 1200px;
}

.swiper_case {
    height: 500px;
}

.swiper_case img {
    width: 100%;
    display: block;
    transition: all .5s;
}

.swiper_case .swiper-slide {
    transition: .1s linear;
    display: inline-table;
    overflow: hidden;
    transition: all .5s;
}

.swiper_case .swiper-slide a {
    position: absolute;
    bottom: 0;
}

.swiper_case .swiper-wrapper .swiper-slide-active {
    width: 500px !important;
}

.swiper_case .swiper-wrapper .swiper-slide-active img {
    width: 500px;
}

.banner_c_title {
    position: fixed;
    height: 40px;
    top: 40px;
    width: 100%;
}

.banner_c_close {
    float: right;
    margin-right: 40px;
    cursor: pointer;
}

.banner_c_close img {
    width: 40px;
}

.banner_c_main .case_prev {
    background: url(../images/btn_next_prev.png) 0 0 no-repeat;
    width: 60px;
    height: 80px;
    left: -100px;
    outline: none;
}

.banner_c_main .case_next {
    background: url(../images/btn_next_prev.png) 0 -81px no-repeat;
    width: 60px;
    height: 80px;
    right: -100px;
    outline: none;
}

.banner_c_bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    text-align: center;
    color: #fff;
    font-size: 16px;
}

.banner_c_bottom span:first-child {
    color: #f88c00;
}