.line_left_1{position:absolute;width:20%;left:0;top:700px;overflow:hidden;z-index:1;opacity:.5}.wave_middle_right{position:absolute;width:300px;right:0;top:800px;z-index:1}.circle_middle_right{position:absolute;width:150px;right:0;top:1100px}.wave_middle_left{position:absolute;width:300px;left:0;top:1600px;z-index:1}.line_right_2{position:absolute;width:300px;right:0;top:2000px;overflow:hidden;z-index:1}.line_right_2 img{width:160%}