1. Line height (line spacing) to 1.5 times the font size; Spacing following paragraphs to 2 times the font size; Letter spacing (tracking) to 0.12 times the font size; Word spacing to 0.16 times the font size.
2. Color blindness simulation feature that allows you to preview websites as they appear to people with different types of color vision deficiency (protanopia, deuteranopia, tritanopia, achromatopsia)
