The above heading is red, since we specified that H1-H3 headers are red. This paragraph is blue, which is the default color for the entire body. It's also centered and has 20% margins, which we specified as the default for paragraphs.
This paragraph has black text, because it overrides the default color in the paragraph tag. We didn't override the centering, so this paragraph is also centered.
This is another paragraph with the default paragraph style.