#sec1 .sec1_slide .img1{background: url(../img/sub3/1/image1.jpg)no-repeat 50% 50%;background-size: cover;}
#sec1 .sec1_slide .img2{background: url(../img/sub3/1/image2.jpg)no-repeat 50% 50%;background-size: cover;}
#sec1 .sec1_slide .img3{background: url(../img/sub3/1/image3.jpg)no-repeat 50% 50%;background-size: cover;}
#sec1 .sec1_slide .img4{background: url(../img/sub3/1/image4.jpg)no-repeat 50% 50%;background-size: cover;}

#sec2{background: url(../img/sub3/1/image2.jpg)no-repeat 50% 50%;background-size: cover;}