Font size of title inside widges doesn't change

Hey, here.
I’m trying to change the font sizes of my titles inside widges and nothing happens.
I used the follw\owing code that I found in this forum:

.panel-grid-cell .widget-title {
font-size: 20px !important;

It changed some of the pages but others not.
What to do??


Please post a link to a page where it didn’t worked and point out the widget-title on that page where the code didn’t worked, so I can give you a working Custom CSS for that area too.

Kind Regards,