Page Builder Styles=>CSS overrides

I can't get any Page Builder CSS overrides to work e.g. in the page or at row level. IS there a special syntax? I also tried putting in , no luck. I am having to use the CSS overrides in the template (made with Template Creator). Thanks for your help and feedback!

Hi
Please give me a real example on a page, what you want to change and how you are doing it, with an url
so that I can check
CEd

See 'Food'. There is an accordion list. I need to change the triangle icons on the levft - make them larger and change the colour. (currently such a light grey, impossible to see on a PC)

As I mentioned, I have never managed to the Page Builder CSS overrides to ever work anywhere, so I must be making an elementary mistake...
Thanks

ok
you can add this rule in the custom css of your template then adapt the values
CEd

Many thanks for your help.
Actually as I mentioned in my first message, I already got it working using my template. I was interested in knowing more about the Page Builder CSS parameters and the usage.
So it's not possible in Page Builder, when can/should you use the CSS overrides in Page Builder, rather than changing the template CSS?
Thanks in advance for your help.

I don't really understand the request
in Page Builder CK you have some styling options in the left panel that let you manage the display of the items
if you don't find the styling option that you need, then you must use your own css (as we are doing here)
you can put your custom css in your template (custom.css), or you can also use the custom css (button in the left panel) to add this code only for this page. As you want