柔性网格系统Scss Plus 安装 $flexiblegs-method : ( " css " // "bem" ); $flexiblegs-breakpoint : ( " xl " : " " , " lg " : " (max-width: 1024px) " , " md " : " (max-width: 768px) " , " sm " : " (max-width: 667px) " ); $wrap-col : ( " auto " , 1 ,