Can I create a pop up text to appear when I click on some text?

Site URL: https://bison-maroon-z654.squarespace.com/

Hi !

I was wondering if you could help me with a CSS code. 

I have a page on my website  where I have a few "read more" texts. 

When someone clicks on the "read more" message, I would like a pop up text to appear on the page when I could write some additional information. And once the reader has finished reading this "read more" information, he could just close the pop up text and carry on reading the page. 

the page is https://bison-maroon-z654.squarespace.com/products 

password: TPLvision2021

thank you very much in advance for your help, that would be great if this is possible !

Marianne 

Hi. If you have a budget, you can use Lightbox plugin.

If you need free solution, let me know, I will search for some free code.