Wie kann ich diese Header- und Footer-Anpassungen erreichen?

[Thomas_G]

Yep, that’s a theme.

Footer:

Easy Responsive Footer

Summary Easy Responsive Footer will allow you to build a fully-responsive footer using nothing but plain text. Preview Preview on theme-creator.discourse.io Repository Link https://github.com/discourse/Discourse-easy-footer New to Discourse Themes? Beginner’s guide to using Discourse Themes Install this theme component Samples Desktop [1] Mobile [2] Settings There are six settings in this component that will h…

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Search bar:

Search Banner

Summary Search Banner puts a search bar along with optional headline and subhead text in a banner above the main topic list navigation. Preview Preview it on theme-creator.discourse.org Repository Link https://github.com/discourse/discourse-search-banner New to Discourse Themes? Beginner’s guide to using Discourse Themes Install this theme component Features By default, this banner appears on all top-level topic pa…