Broken layout in Social-Media browser

Dear community,

i’ve build some GB-Elements on an affiliate landingpage: https://www.zehnideen.de/tipps

Some of the boxes are generated automatic with an Amazon-plugin, some boxes are build with GB (for example the box with JBL Go3 bluetoothspeaker).

Everything looks good in desktop and mobile browsers.

But the layout is broken in social media-browsers like Instagram or TikTok. See attached screenshots. The border is missing, the buttons are only displayed as textlinks.

Any solution for this?