How can I achieve these header and footer customisations?

[Thomas_G]

Yep, that’s a theme.

Footer:

Easy responsive footer

This is a theme component that will allow you to build a fully-responsive footer using nothing but plain text. Samples Desktop [1] Mobile [2] Settings There are six settings in this component that will help configure it easily 1. Heading Text for the heading in the footer - you can use your site name for example - Max length 25 characters [3] 2. Blurb a short blurb about your community - Max length 180 characters [4] 3. Link sections Add link sections. The ideal number of sect…

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Search bar:

Search banner theme component

This is a component that puts a search bar along with optional headline and subhead text in a banner above the main topic list navigation. By default this banner appears on all top-level topic pages (latest/new/unread/top/categories… anything in the top menu site setting) but it can also be set to only display on a community’s homepage. [17%20PM] This very heavily borrows from @angus’ Header Search Theme Component Available settings Set the headline and subhead text S…