Make Sure Your Text is Legible
Keep contrast in mind when styling your text. Not everyone has perfect vision, and as we age our eyes take in less and less light. Light text on light backgrounds, dark text on dark backgrounds, and any text against a visually-cluttered background will be hard or impossible for many people to read.
When styling text you can use WebAIM’s Color Contrast Checker to make sure your text can easily be read by everyone.