.ks-topic-bg-image{background-repeat:no-repeat;background-attachment:scroll;background-size:320px auto;background-position:center;height:100%;width:100%;position:absolute;}.layer_anim{position:absolute;transition:all .4s;-moz-transition:all .4s;-webkit-transition:all .4s;-o-transition:all .4s;}.layer_center{left:50%;margin-left:-80px;top:50%;margin-top:-30px;}.layer_center_move_up_{top:70%;opacity:0;}.layer_center_move_up{opacity:1;}.layer_center_move_left_{left:70%;opacity:0;}.layer_center_move_left{opacity:1;}.layer_lefttop{left:10%;top:10%;}.layer_lefttop_move_up_{top:30%;opacity:0;}.layer_lefttop_move_up{opacity:1;}.layer_lefttop_move_left_{left:30%;opacity:0;}.layer_lefttop_move_left{opacity:1;}.topic_button{position:absolute;z-index:100;}.topic_button img{width:100%;}