add mission cards

_templates/mission.html

+<div class="card bg-light mt-4 text-center">
+    <div class="card-header bg-dark text-light">
+        Why are we doing this?
+    </div>
+    <div class="card-body">
+    <p class="card-text text-dark">
+        We believe in making computers open again to democratize technology and empower individuals and organizations to explore, experiment, and create without the constraints of proprietary systems.
+    </p>
+    </div>
+</div>
+
+<div class="card bg-light mt-4 text-center">
+    <div class="card-header bg-dark text-light">
+        What are we doing?
+    </div>
+    <div class="card-body">
+    <p class="card-text text-dark">
+        We design versatile and affordable single-board computers to provide developers, hobbyists, and educators with a platform for prototyping, experimentation, and production of embedded systems. Our comprehensive documentation, tutorials, and vibrant online community support users in their projects and foster knowledge sharing.
+    </p>
+    </div>
+</div>
+
+<div class="card bg-light mt-4 text-center">
+    <div class="card-header bg-dark text-light">
+        How are we doing it?
+    </div>
+    <div class="card-body">
+    <p class="card-text text-dark">
+        Through open-source hardware designs, diverse software support, and active community engagement, we enable users to customize, innovate, and collaborate effortlessly in embedded computing.
+    </p>
+    </div>
+</div>

conf.py

@@ -138,9 +138,13 @@ html_css_files = [
     'css/custom.css',
 ]
 
-# html_sidebars = {
+# Pages entry without primary (left) sidebar
+
+html_sidebars = {
+    "**": ["sidebar-nav-bs", "mission"],
+    "index": []
+}
 
-# }
 
 html_theme_options = {
     "external_links": [
@@ -211,7 +215,7 @@ html_theme_options = {
     "footer_end": ["last-updated"],
     # "content_footer_items": ["last-updated"],
     "secondary_sidebar_items": {
-        "**": ["page-toc", "edit-this-page", "sourcelink","pdf","oshw"]
+        "**": ["page-toc", "edit-this-page", "sourcelink","pdf","forum","oshw"]
     },
 }