Unfortunately, the article content provided consists entirely of CSS styling code and technical web formatting information, rather than the actual news story about the Black Mountain mural and upcoming art gallery opening.

The original article title suggests this story would cover details about a mural in Black Mountain that is attracting crowds of visitors in anticipation of a new art gallery's grand opening. However, without access to the actual news content, a complete and accurate rewrite cannot be provided.

To properly rewrite this article, the actual news content would need to be provided, including details about the mural's location, artist, themes, community response, and information about the upcoming art gallery opening.