I need to closeable create a pop-up with text for bios

It should be a simple java script or in-line code. I want to click on multiple images within a series and link to different bios for each image. a simple pop up with text with a clickable close button. I have the text popping up in a different window tab, but need it to be sized smaller and not in a tab. Can you do it under link / Custom Attributes?

This is how I would like to do it, and have in other platforms. It should not be hard.

Here is my public share link: LINK
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