CSS: Use modern features, avoid the use of !important

[mbaierl]

It would be helpful if the CSS stack would use modern features (like i.e. CSS Variables) for the colors.

This would limit the amount of CSS needed to be written in the page itself and it would limit the use of !important, which makes it sometimes hard(er) to overwrite the styles.

[glorious1]

@mbaierl , you might consider making those improvements in a fork and submitting as a pull request.

[mbaierl]

@glorious1 If time permits I might do that.