Second Autoprefixer control comment was ignored. Autoprefixer applies control comment to whole block, not to next rules.

编译报warning：

Second Autoprefixer control comment was ignored. Autoprefixer applies control comment to whole block, not to next rules.

之前通过 

/* autoprefixer: off */
-webkit-box-orient: vertical;
/* autoprefixer: on */

这种方式注释的方式需要改为:

/* autoprefixer: ignore next */
-webkit-box-orient: vertical;