Why when calling the function changes the font to sans-serif?

I wrote a small function which adds the zalgo effect. The font when adding the zalgo effect in the manual is not changed. But when visviva function why the font is changed to sans-serif. How and why this happens?
https://codepen.io/Liqrizz/pen/drqXvK?editors=0110
March 19th 20 at 09:23
1 answer
March 19th 20 at 09:25
Solution
Have a fontthat you plug in the range combining diacritical marks (U+0300..U+036F). Therefore, the font changes.

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