Align stylesheet for home and subpages

[sbckr]

The landing page (home.html) uses an adjusted stylesheet compared to all the subpages.

Affects are for example:

1. The content width differs as max-width of .md-grid is overwritten:

.md-grid {
  /* Reduce the width of the content somewhat (original value is 61rem) */
  max-width: 50rem;
}

2. Text style as well as the color for links in the announcement header differ
   Home
   
   Getting Started
   

[github-actions]

This issue has been marked stale because it has been open for 90 days with no activity. It will be automatically closed in 30 days if no further activity occurs.

[github-actions]

This issue has been marked stale because it has been open for 90 days with no activity. It will be automatically closed in 30 days if no further activity occurs.