style:纠正一些公共样式错误。

themes/grid/source/css/common.less

@@ -59,16 +59,19 @@
         fit: fit-content;
     };
     each(@special-basis, {
-        &.w-@{key}-@{media} {
+        .b-@{key}-@{media} {
             flex-basis: @value;
         }
     });
     @basis-percent: 2, 3, 4, 5, 8, 10, 12, 16, 20, 24;
     each(@basis-percent, .(@max) {
         each(range(1, @max), .(@i) {
-            &.w-@{i}-@{max}-@{media} {
+            .b-@{i}-@{max}-@{media} {
                 flex-basis: percentage(@i / @max);
             }
+            .w-@{i}-@{max}-@{media} {
+                width: percentage(@i / @max);
+            }
         });
     });
     @wrap-modes: {