Glow effect: how do I get that?

I’m working on getting the glow effect to function in the manner it does on the 21 day tutorial without luck.
Everything either glows or there is no glow.
When I made the div block a link it turned white.
No idea where I went wrong.
Sorry for my repeated ignorance.

Stay safe and enjoy!

Here is my public share link: **[(Webflow - testa)]