.dashi_box1{width:100%;max-width:1920px;margin:0 auto;}
.dashi_box2{width:1220px;margin:0 auto;text-align:center;padding:60px 0;}
.dashi_box2 video{width:977px;}
.dashi_box3{width:1220px;margin:0 auto;padding-bottom:50px;}
.dashi_box3_li{width:1200px;border:10px solid #bfbfbf;height:535px;background-size:cover;margin-bottom:60px;background-position:center;}
.dashi_box3_li:hover{border:10px solid #004ea2;}