Hello, Curtis!
First of all, I don’t recommend you to edit the theme files.
Next, If you want to customize your theme, please use the built-in options from the customizer ( Dashboard->Appearance->Customize)
https://prnt.sc/pwrn0n
There you can find many options to customize the look of your theme.
e.g if you want to change the height of the breadcrumb, you can go to Customizing-> Breadcrumb -> General…
And change the height per your needs
https://prnt.sc/pwrnkm
Also, If you want to change the page background color, simply go to : Customizing ▸ General ▸ Pages menu and pick your favorite page background color,
https://prnt.sc/pwrqbk
If you want to add some custom CSS codes, instead of the modifying theme CSS files, simply insert it into the Customizing->General->Additional CSS
https://prnt.sc/pwrs0o
If you find that some options missing and you need some additional help with custom CSS, I can help you with that.
Also, please check our knowledge base at the following address:
https://docs.theme-vision.com/
Best Regards