CHANGE COLOUR OF THE TITLE

Hey guys!

I think it should be easy to find an answer fot his but I’m not a pro and trying to do the change for more than 2 hours now, without any success.

Picture 1: You see the title of a normal blog page “Interested? Text me!”

If I go to the preview…

Picture 2:
The title is black. I want it to be white but I can’t find a way in the layout options to just make it white…

I tried to copy paste aditional Css codes but it didn’t work :frowning:

HELP ME! :frowning:

additional I found another problem…

I added the pink background with telephone as a background picture but now it’s on every page on the background.
Is it possible to add background pictures just for one page and not all of them at once?