a{
    color: #000;
}
.swiper-container{
    background: #282f43;
}
.swiper-container .swiper-slide{
    overflow: hidden;
}

.index-banner-bg{
    width: 100%;
    height: auto;
    // min-width: 1500px;
    position: relative;
    left: 50%;
    -webkit-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    transform: translateX(-50%);
    display: block;
}
.swiper-button-prev{
    width: 60px;
    height: 60px;
    background: url(../images/dev/left.png) center no-repeat;
    background-size: contain;
}
.swiper-button-next{
    width: 60px;
    height: 60px;
    background: url(../images/dev/right.png) center no-repeat;
    background-size: contain;
}
.swiper-container-year{
    background: #2d313c;
    display: none;
}
.swiper-container-year .swiper-slide{
    text-align: center;
}
.swiper-container-year .swiper-slide span{
    line-height: 50px;
    color: #fff;
}
.dev-mid-det{
    position: relative;
}
.dev-mid-det-left{
    width: 20%;
    background: #2d313c;
    color: #fff;
    text-align: center;
    line-height: 80px;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 9;
    max-width: 300px;
    list-style:none;
}
.dev-mid-det-left li{
    cursor: pointer;
    list-style:none;
}
.dev-mid-det-left-act span{
    border-bottom: 3px solid #fff;
}
.dev-mid-det-right{
    width: 80%;
    height: auto;
    position: relative;
    left: 20%;
}
.dev-mid-det-right>div{
    position: relative;
    width: 100%;
}
.dev-mid-det-right>div:after{
    content:' ';
    display:block;
    height:0;
    clear:both;
    visibility:hidden;

}
.dev-mid-det-right-img{
    width: 40%;
    padding:50px 0;
    max-width: 450px;
    float: left;
}
.dev-mid-det-right-img>img{
    display: block;
    width: 80%;
    position: relative;
    left: 10%;
    height: auto;
}
.dev-mid-det-right-det{
    width: 59%;
    max-width: 600px;
    padding-top: 50px;
    float: left;
}
.dev-mid-det-right-det>h3{
    line-height: 60px;
    font-size: 27px;
}
.dev-mid-det-right-det p{
    line-height: 2em;
}
.dev-mid-det-right-det>span{
    line-height: 40px;
}
.dev-mid-det-right-det>p>span{
    display: inline-block;
    width: 140px;
    height: 2px;
    background: #96989d;
    margin-top: 10px;
    margin-bottom: 12px;
}