feat: Contrast and legibility improvements

content/demo/index.md

@@ -20,19 +20,19 @@ There should be whitespace between paragraphs.
 
 There should be whitespace between paragraphs. We recommend including a README, or a file with information about your project.
 
-# Header 1
+# Heading 1
 
 > Yes, H1 has ultra-bold style and a dot at the end. You probably shouldn't use it for anything other than page header :)
 
 This is a normal paragraph following a header. Codeberg is a code hosting platform for version control and collaboration. It lets you and others work together on projects from anywhere.
 
-## Header 2
+## Heading 2
 
 > This is a blockquote following a header.
 >
 > > When something is important enough, you do it even if the odds are not in your favor.
 
-### Header 3
+### Heading 3
 
 ```js
 // Javascript code with syntax highlighting.
@@ -49,19 +49,19 @@ GitHubPages::Dependencies.gems.each do |gem, version|
 end
 ```
 
-#### Header 4
+#### Heading 4
 
 - This is an unordered list following a header.
 - This is an unordered list following a header.
 - This is an unordered list following a header.
 
-##### Header 5
+##### Heading 5
 
 1.  This is an ordered list following a header.
 2.  This is an ordered list following a header.
 3.  This is an ordered list following a header.
 
-###### Header 6
+###### Heading 6
 
 | head1        | head two          | three |
 | :----------- | :---------------- | :---- |