.banner_font{
    top: 285px;
    left: 220px;
    right: inherit;
}
.about{
    width: 90%;
    height: auto;
    min-height: 735px;
    margin: -365px auto 0;
    background-color: #ffffff;
    box-shadow: 0px 0px 49px 0px 
        rgba(42, 42, 42, 0.15);
    border-radius: 16px;
    overflow: hidden;
    padding: 70px 75px;
    margin-bottom: 150px;
}
.about .img{
    width: 445px;
    height: 100%;
    background-color: #ffffff;
    border-radius: 12px;
    overflow: hidden;
}
.about .caption{
    padding: 30px 90px 30px 133px;
    height: 100%;
    overflow: hidden;
    font-family: 'SourceHanSansCN-Normal';
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 34px;
    letter-spacing: 2px;
    color: #707070;
}
.about .caption h1{
    font-family: 'SourceHanSansCN-Bold';
    font-size: 28px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 80px;
    letter-spacing: 2px;
    color: #000000;
}
.content{
    margin: 230px auto 0;
    width: 1360px;
    height: auto;
}

.content .tit{
    position: absolute;
    width: 100%;
    font-family: 'SourceHanSansCN-Bold';
    font-size: 28px;
    font-weight: normal;
    font-stretch: normal;
    line-height:1;
    margin-top: -14px;
    letter-spacing: 2px;
    text-align: center;
    color: #000000;
}
.content .txt{
    width: 100%;
    height: auto;
    padding: 95px 140px;
    font-family: 'SourceHanSansCN-Normal';
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 37px;
    letter-spacing: 1px;
    color: #707070;
    margin-bottom: 60px;
}
.content .txt:after,.content .txt:before{
    content: "";
    position: absolute;
    left: 0;
    width: 1360px;
    height: 50px;
    background-position: center;
    background-size: 1360px 50px;
    background-repeat: no-repeat;
}
.content .txt:after{
    top: 0;
    background-image: url(../images/bor_top.png);
}
.content .txt:before{
    bottom: 0;
    background-image: url(../images/bor_bottom.png);
}
.content .img_list{
    width: calc(100% + 20px);
    height: 210px; 
    margin-bottom: 250px;
}
.content .img_list .item{
    width: 25%;
    float: left;
    height: 100%;
    padding-right: 20px;
}
.content .img_list .img{
    background-color: #dcdcdc;
    border-radius: 12px;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.bottom_banner{
    width: 100%;
    height: 280px;
    background-image: url(../images/about_foot_bg.jpg);
    background-position: center;
    background-size: cover;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'SourceHanSansCN-Normal';
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 3px;
    color: #ffffff;
}
@media only screen and (max-width: 1399px){
    .sub_banner{
        height: 8rem;
    }
	.banner_font{
	    top: 285px;
	    left: 220px;
	    right: inherit;
	}
	.about{
	    min-height: 7rem;
	    margin: -3.5rem auto 0;
	    background-color: #ffffff;
	    box-shadow: 0px 0px .5rem 0px 
	        rgba(42, 42, 42, 0.15);
	    padding: .7rem .7rem;
	    margin-bottom: 1.5rem;
	}
	.about .img{
	    width: 100%;
	    height: 6rem;
	}
	.about .caption{
	        padding: .3rem 0;
	        font-size: .24rem;
	        width: 100%;
	        line-height: .35rem;
	}
	.about .caption h1{
	    font-size: .28rem;
	    line-height: .8rem;
	}
	
	.bottom_banner{
	    width: 100%;
	    height: 3rem;
	    font-size: .4rem;
	}
}
@media only screen and (max-width: 750px){
    .about_wrapper{
        padding: 1rem 0 0;
    }
    .about{
        width: calc(100% - .8rem);
        padding: .4rem;
        margin-bottom: 1rem;
        border-radius: .1rem;
    }
    .about .img {
        width: 100%;
        height: auto;
        border-radius: .1rem;
    }
    .about .caption {
        padding: .3rem 0;
        font-size: .24rem;
        width: 100%;
        line-height: .35rem;
    }
    .about .caption h1 {
        font-size: .36rem;
        line-height: .8rem;
    }
}