I am newbie with css and here is my problem.

When I using elements, I can the styles, computed, layout, event listeners, DOM breakpoints as you can see in this picture image about styles, computed, layout when click to elements

But when I click to Sources, it does not show styles, computed, layout, event listeners, DOM breakpoints as I want, you can see in this picture image when click to sources

I want to show styles, computed, layout, event listeners when I click to sources, it help me so much when I code, and I can debug and see where is the bug. Could you please tell me how to show these ? Thank you vey much.