Show Debug Info
Set this to `SHOW` if you want to display the execution and debug details (note that some hostings might restrict this via PHP configuration). Set this to `LOG` if you prefer to write the execution and debug details to the log file.
Debug Level
Select the depth of the details you need to see in the debug output.
Template debug
Enable Template Debug setting if you need to check issues with a template in the storefront and control panel. This will give you a link for storefront and admin with the debug parameter in the URL.
Browser inspector
Almost all browsers have the Page or Code Inspector to examine the HTML and CSS of a page.
When you select some element on your page the Rules view lists show all the CSS rules that apply to the selected element. This can help you understand where the CSS file is located and what rule you need to edit.