I need a quick CSS tweak on my site: the top-navigation menu bar needs its background to remove the unwanted white area. No layout restructuring or responsive-breakpoint work is required—this is purely a style adjustment. Here’s what I expect: • A revised CSS snippet (or full file if easier) that targets the current menu bar class/ID and applies the new hex colour I’ll share once we start. • The change must not affect hover states, dropdown behaviour, or any other site elements. • A brief note explaining where you placed the rule so I can maintain it later. The site is built with standard HTML/CSS; no pre-processors are in use. Please test in the latest Chrome, Firefox, and Safari before delivery so I can drop the file straight into production.