text size in table

or where can i find css for wp-block-table

Let’s see your webpage that has the table so that we can suggest the correct CSS.

https://travelhit.ee/19-20-23-aprill-koolivaheaeg-turgis/

I checked your table of holidays on that page and it looks fine, what is the issue you’re facing?

on mobile device last row doesnt fit to the screen, so i think only possible thing to resolve it to make smaller textsize or make fixed width of first row

Would you be able to send a screenshot of what you’re seeing? You can upload images to a image-sharing service

I made changes in css
.wp-block-table {
font-size: 10pt;
}
and its now fit to mobile screen