Dynamic share buttons for different social media

Hi @sabanna, @Waldo, @AlexManyeki, @PixelGeek
could you please explain why you should not place the class on the HTML custom code element?
When I leave it without a class I don’t see them in the designer and in the site.
When I use only w-inline-block, all 3 buttons looks like grey cubes in the designer and in the site.
When I give each button its classes (w-inline-block, social-share-btn and fb/tw/lnk) it works sometimes, but sometimes I see only 1 or two buttons out of 3 and the text is not delivered to twitter. It opens the twitter window empty.

https://preview.webflow.com/preview/proof-7c19bb?preview=f6e7969d662abf6b71a2df8a37f8ee17