Hi @KieranK95 ,
I am glad that my solution is helpful to you 
.
Topic summary
A user seeks help splitting a dropdown menu’s “Gemstones” subheading into two columns and centering the heading on the Debut theme, as the current single-column layout appears too long.
Solution Provided:
- Navigate to Online Store → Theme → Edit code
- Open the theme.liquid file
- Insert custom CSS/markup code before the closing tag
Outcome:
The solution was successfully implemented and resolved the issue. The user confirmed it worked and expressed appreciation for the assistance.