docs: open collective, sponsors

- drop open collective banner height, sometimes cuts off image

- use grid cards for sponsors

- hide navigation on both for more screen space

dev/treefmt.nix

@@ -63,6 +63,7 @@
       ];
       excludes = [
         "config.yaml"
+        "docs/sponsors.md"
         "*secrets.yaml"
         "modules/secrets/*.yaml"
       ];

docs/open-collective.md

@@ -1,8 +1,8 @@
-<style>
-div.opencollective-banner > iframe {
-    height: 700px;
-}
-</style>
+---
+hide:
+  - navigation
+---
+
 <noscript>
   <a href="https://opencollective.com/nix-community">https://opencollective.com/nix-community</a>
 </noscript>

docs/sponsors.md

@@ -1,7 +1,28 @@
+---
+hide:
+  - navigation
+---
+
 Thanks to all our sponsors.
 
-<!-- prettier-ignore-start -->
-|[<img src="https://raw.githubusercontent.com/cachix/docs.cachix.org/master/source/logo.png" width="200" alt="Cachix">](https://cachix.org)|[<img src="https://raw.githubusercontent.com/Gandi/.github/b1f21a402d9223c672476b41148429f538be5303/logos/black.svg" width="200" alt="Gandi">](https://www.gandi.net/)|[<img src="../Logo_namespace_filled_lightbg.png" width="200" alt="Namespace">](https://cloud.namespace.so)|
-|:-:|:-:|:-:|
-|Cachix provides us with 1TB of free cache.|Gandi provides us with a free domain and a virtual private server.|Namespace provides us with faster GitHub runners, including ARM64.|
-<!-- prettier-ignore-end -->
+<div style="text-align:center" class="grid cards" markdown>
+
+-   [<img src="https://raw.githubusercontent.com/cachix/docs.cachix.org/master/source/logo.png" width="250" alt="Cachix">](https://cachix.org)
+
+    ---
+
+    Cachix provides us with 1TB of free cache.
+
+-   [<img src="https://raw.githubusercontent.com/Gandi/.github/b1f21a402d9223c672476b41148429f538be5303/logos/black.svg" width="250" alt="Gandi">](https://www.gandi.net/)
+
+    ---
+
+    Gandi provides us with a free domain and a virtual private server.
+
+-   [<img src="../logo_namespace_filled_lightbg.png" width="250" alt="Namespace">](https://cloud.namespace.so)
+
+    ---
+
+    Namespace provides us with faster GitHub runners, including ARM64.
+
+</div>

mkdocs.yml

@@ -35,6 +35,8 @@ theme:
     repo: fontawesome/brands/github
 
 markdown_extensions:
+  - attr_list
+  - md_in_html
   - toc:
       toc_depth: 0