.b_page{width:980px;margin:0 auto;position:relative;z-index:10;}.b:before,.b:after{content:'\0020';display:block;overflow:hidden;visibility:hidden;width:0;height:0}.b:after{clear:both}.b{zoom:1}.b{margin:0 10px;float:left;position:relative;}.w_960{width:980px;}.w_940{width:940px;}.w_860{width:860px;}.w_780{width:780px;}.w_700{width:700px;}.w_660{width:660px;}.w_620{width:640px;}.w_540{width:540px;}.w_460{width:460px;}.w_440{width:440px;}.w_380{width:380px;}.w_300{width:300px;}.w_290{width:300px;}.w_280{width:280px;}.w_270{width:270px;}.w_260{width:260px;}.w_250{width:250px;}.w_255{width:255px;*width:260px;}@media \0screen {.w_255{width:260px;}}.w_220{width:220px;}.w_140{width:140px;}.w_120{width:120px;}.w_105{width:105px;*width:100px;}.w_60{width:60px;}