.bg_second{background:url(../images/bg_main_second.png) no-repeat left top; height:130%; width:55%; position:absolute; left:0; top:-110px;}
.bg_contact{background:url(../images/bg_main_last.png) no-repeat left top; height:120%; width:55%; position:absolute; left:0; bottom:0px;}
.bg_ticketfee{background:url(../images/bg_main_third.png) no-repeat right top; height:100%; width:55%; position:absolute; right:0; top:-50px;}
.bg_first{background:url(../images/bg_main_first.png) no-repeat right bottom; height:195%; width:55%; position:absolute; right:0; top:-350px;}
.bg_about{ background:url(../images/bg_about.jpg) no-repeat top center; min-height:600px; }

@media screen and (max-width: 1200px) {
.bg_second{  background:url(../images/bg_main_second_b.png) no-repeat left top; height:130%; width:55%; position:absolute; left:0; top:-110px;}
.bg_contact{ background:url(../images/bg_main_last_b.png) no-repeat left top; height:120%; width:55%; position:absolute; left:0; bottom:0px;}
.bg_ticketfee{ background:url(../images/bg_main_third_b.png) no-repeat right top; height:100%; width:55%; position:absolute; right:0; top:-50px;}
.bg_first{ background:url(../images/bg_main_first_b.png) no-repeat right bottom; height:170%; width:55%; position:absolute; right:0; top:-350px;}
.bg_about{ background:url(../images/bg_about.jpg) no-repeat top center; background-size:cover }
}