Redesign in GraalVM website style

[Y-Shcheholskyy]

Changed the appearance of the pages - background color, fonts, table of contents, snippets etc.
Added header and footer design

[melix]

There seem to be a mix of changes of style and guide. I think separating the 2 would make it easier to review.

Does this support a "light" theme too? I find dark themes pretty hard to read.

[Y-Shcheholskyy]

There seem to be a mix of changes of style and guide. I think separating the 2 would make it easier to review.

Does this support a "light" theme too? I find dark themes pretty hard to read.

Yes, I agree, it is accidental. for some reason when I created this PR, the changes made in the previous got into it. Strangely. I created my branch from master, I don't know how it happened

There is no light theme, but I will try to make a light background with dark text for the guides and documentation

[Y-Shcheholskyy]

Text changes were reverted. Please review.
The light theme enhancement can be done in a follow up PR.

[Y-Shcheholskyy]

Text changes in gradle and maven plugin files were reverted. Thanks for review

[dnestoro]

Can we avoid using !important or it is necessary? (this comment applies to other !important statements as well)

[Y-Shcheholskyy]

Unfortunately not, cause I don't have access to bunch of files in docs/SRC/docs/asciidoc/css while working. Instead, these files are present in the docs/BUILD/docs/asciidoc/css when the site is generated. If I could edit them in the "SRC" folder, then of course I wouldn't use these modifiers because it's not good practice.

[dnestoro]

@Y-Shcheholskyy from the screenshots you shared, and based on the code I see, the PR looks good. Can you please share a screenshot how code snippets look like now (for example some build.gradle or pom.xml code snippets that we have in docs)?

[Y-Shcheholskyy]

@Y-Shcheholskyy from the screenshots you shared, and based on the code I see, the PR looks good. Can you please share a screenshot how code snippets look like now (for example some build.gradle or pom.xml code snippets that we have in docs)?

Sure, here you are: