How to change the top menu height and change the blog's URL

You can try achieving this by adding the following CSS code in the Custom CSS option of the latest version of Sparkling theme on the below path.

Admin Area -> Appearance -> Customize -> Sparkling Options -> Other -> Custom CSS

when i add this code header get’s bigger. I need to keep the height at 50px both menu (when selecting) and header. previously u gave me a code to set the header height at 50px. (this thread: https://colorlibsupport.com/t/how-can-i-edit-the-theme-header-width-and-main-color-theme/#post-69965)

pls help. my blog kandyauto.lk/blog