$base-media-sm: 768px; $base-media-md: 992px; $base-media-lg: 1700px; $base-media-xl: 1920px; // 响应式 变更尺寸 $screen-large-desktop : 1600px; $screen-small-desktop : 1440px; // 限定尺寸 $screen-limit-width: 1340px; $grid-breakpoints: ( small: $screen-small-desktop, large: $screen-large-desktop, );