.i_way1{background:url('../img/i_way1.png') no-repeat center / contain;}
.i_way2{background:url('../img/i_way2.png') no-repeat center / contain;}
.i_way3{background:url('../img/i_way3.png') no-repeat center / contain;}
.i_way4{background:url('../img/bicon3.png') no-repeat center / contain;}
.i_way5{background:url('../img/i_way5.png') no-repeat center / contain;}
.way_bg1{background:url('../img/way_bg1.jpg') no-repeat center/contain;}
.way_bg2{background:url('../img/way_bg2.jpg') no-repeat center/contain;}
.way_bg3{background:url('../img/way_bg3.jpg') no-repeat center/contain;}
.way_bg4{background:url('../img/way_bg4.jpg') no-repeat center/contain;}
.way_bg5{background:url('../img/way_bg5.jpg') no-repeat center/contain;}
.way_hover_bg1{background:url('../img/way_hover_bg1.jpg') no-repeat center/contain;}
.way_hover_bg2{background:url('../img/way_hover_bg2.jpg') no-repeat center/contain;}
.way_hover_bg3{background:url('../img/way_hover_bg3.jpg') no-repeat center/contain;}
.way_hover_bg4{background:url('../img/way_hover_bg4.jpg') no-repeat center/contain;}
.way_hover_bg5{background:url('../img/way_hover_bg5.jpg') no-repeat center/contain;}
.i_course1{background: transparent url(../img/i_course1.png) center center no-repeat;}
.i_course2{background: transparent url(../img/i_course2.png) center center no-repeat;}
.i_course3{background: transparent url(../img/i_course3.png) center center no-repeat;}
.i_cdtl1{background: transparent url(../img/i_cdtl1.png) center center no-repeat;}
.i_cdtl2{background: transparent url(../img/i_cdtl2.png) center center no-repeat;}
.i_cdtl3{background: transparent url(../img/i_cdtl3.png) center center no-repeat;}
.i_cdtl4{background: transparent url(../img/i_cdtl4.png) center center no-repeat;}
.i_cdtl5{background: transparent url(../img/i_cdtl5.png) center center no-repeat;}
.i_course_bg1{background: transparent url(../img/i_course_bg1.jpg) center center no-repeat;}
.i_course_bg2{background: transparent url(../img/i_course_bg2.jpg) center center no-repeat;}
.i_course_bg3{background: transparent url(../img/i_course_bg3.jpg) center center no-repeat;}