header{
    position: absolute;
    top: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0);
    z-index: 10;
}
.introduce_box{
    padding: .4rem 0; 
    background-color: #f5f5f5;
}
.introduce_box ul {
    display: flex;
}
.introduce_box li {
    margin: 0 auto;
    text-align: center;
}
.introduce_box li div{
    font-size: .18rem;
    text-align: center;
}
.introduce_box li img{
    height: 1.1rem;
    width: 1.15rem
}




/* 头部轮播样式 */
.fader {
    position   : relative;
    padding-top: 49%;
    font-family: "futura", arial;
    overflow   : hidden;
}

.fader .slide {
    position: absolute;
    width   : 100%;
    height  : 100%;
    top     : 0;
    z-index : 1;
    opacity : 0;
}

.fader img.slide {
    height: auto;
}

.fader .prev,
.fader .next {
    position   : absolute;
    height     : .8rem;
    line-height: .55rem;
    width      : .5rem;
    font-size  : 1rem;
    text-align : center;
    color      : #fff;
    top        : 50%;
    left       : 0;
    z-index    : 4;
    margin-top : -.25rem;
    cursor     : pointer;
    opacity    : .7;
    transition : all 150ms;
}

.fader .prev:hover,
.fader .next:hover {
    opacity: 1;
}

.fader .next {
    left : auto;
    right: 0;
}

.fader .pager_list {
    position   : absolute;
    width      : 100%;
    height     : .4rem;
    padding    : 0;
    line-height: .4rem;
    bottom     : 0;
    text-align : center;
    z-index    : 4;
}

.fader .pager_list li {
    display      : inline-block;
    width        : 0.1rem;
    height       : 0.1rem;
    margin       : 0 0.07rem;
    background   : #fff;
    opacity      : .7;
    text-indent  : -99.99rem;
    border-radius: 9.99rem;
    cursor       : pointer;
    transition   : all 150ms;
}

.fader .pager_list li:hover,
.fader .pager_list li.active {
    width: .3rem;
    border-radius: 0.04rem;
    opacity: 1;
}
/* 头部轮播样式 */

/* 资质证书轮播 */
.qualification{
    padding: 0 2.4rem;

    background-color: #f5f5f5;
}
.qualification img{
    width: 60%;
    height: 60%;
    display: block;
    text-align: center;
}
.slick-slide div{
    text-align: center;
}
.slick-prev,.slick-next{
    font-size: 0 !important;
}




@media screen and (max-width: 750px) {
    .desc_wrap{
        margin-bottom: 1rem;
    }
    .desc_wrap .line_one{
        flex-wrap: wrap;
    }
    .desc_wrap .line_one .left,.desc_wrap .line_one .right{
        width: 100%;
    }
    .desc_wrap .line_one .right{
        text-align: left;
    }
    .desc_wrap .line_one .right .lt_3{
        float: left;
    }
    .desc_wrap .line_two {
        flex-wrap: wrap;
    }

    .desc_wrap .line_two .left,
    .desc_wrap .line_two .right {
        width: 100%;
        margin-top:0;
    }
}