MAKE YOUR POP-UP IN A CUSTOM MODAL.
How to use trigger modal? Add class show_oso_modal to your button container
How to use? Limit text length to n lines using CSS
for example, with certain font-size to line-height, you can see part of the next line also with text-align:justify, the ellipsis is not at the end of the last line, but overlaps the text at the position, it would be, if the text was aligned to left.