/*.c_main,.c_main span,.c_main a{ margin:0; padding:0;}

.c_main a{ text-decoration:none;}
.c_main a{blr:expression(this.onFocus=this.blur())}
.c_main a:focus{outline:0;}*/
*{ padding:0; margin:0;}
table{ margin:auto}
.clearfix:after {clear:both;display:block;height:0;font-size:0;content:".";visibility:hidden;}
.clearfix{zoom:1;}
.c_main{ width:902px; height:796px; margin:17px auto 0 auto;padding:0; font-size:12px; text-align:center; background:url(../images/banner.jpg) no-repeat;}
.entrance { width: 230px;  height: 77px;  display:inline-block; margin-top:512px;}
.btn_group { background:url(../images/button_01.png) no-repeat; width:474px; height:118px; margin:72px auto 0 auto;}
.btn_group span { display:inline-block; width:200px; height:118px; cursor:pointer;/* background-color:#F00;*/}
.content {width:902px; margin:0 auto;padding:0;text-align:center;}