#sec1 .sec1_in .sec1_slide .swiper-slide.img1{background: url(../img/sub3/3/image1.jpg)no-repeat 50% 50%;background-size: cover;}
#sec1 .sec1_in .sec1_slide .swiper-slide.img2{background: url(../img/sub3/3/image2.jpg)no-repeat 50% 50%;background-size: cover;}
#sec1 .sec1_in .sec1_slide .swiper-slide.img3{background: url(../img/sub3/3/image3.jpg)no-repeat 50% 50%;background-size: cover;}

#sec2 .sec2_in .mi .img{width:100%;height:700px;background: url(../img/sub3/3/image3.jpg)no-repeat 50% 50%;background-size: cover;}