I hv translated your last post to english:
The changes are not seen at the front end.
If you open "developer options" from the browser (F12), see that the CSS to be edited is defalut.css.
I deleted the cache so many times but nothing happened.
I do not know what else to do.
Do I have to recreate the Thumbnails after the CSS changes ??? Only this I did not.
I.m always using F12, thats why I could see, there are no CSS changes yet.
FYI: In generell, if you change (or add) some codes, it's recommended to put these changes, amendments etc. to the template.css.
In your case: To custom.css. Using changes in the PG default.css could be overwritten with next PG update.
How do you change CSS (other than PG)? This should be also done in your custom.css. The custom.css will be compiled to your: preset1.css
I changed temporary resp. add above codes to your custom.css successfully.
You could also change directly in backend under themes > pg default.css.
Or, if easier: Load: https://www.mariassdellegraziearena.it/ ... efault.css
> make changes accordingly and load CSS again via e.g. FTP.
But, see above.
There is no need to recreate the thumbnails (if you are not change the sizes).