Styles via Elements not applied

Hey there

on this site, I have added a two secondary header via Elements:

A - One for homepage/frontpage
B - Another for entire site / except for frontpage

The B-header is created using GB-blocks only. The content (Headline-blocks for address & phone-number, both incl. icons) is showing correctly, but the styling does not, as you can see on this screenshot: Left-Margin between icons and text should be 5px, but looks like zero. Font colour for text & link is set to white, but the phone-text is using grey.

Could you please check and help troubleshooting & fixing this issue?

Temp-admin-login in PI-field.

Thank you and kind regards,
Sascha