Line Spacing

The vertical distance between lines of text, controlled in CSS by the line-height property. Adequate line spacing is important for readability and accessibility, particularly for people with low vision, dyslexia, or cognitive disabilities. Research shows that both younger and older adults prefer 1.5 or double line spacing over single spacing on web pages. WCAG 2.1 Success Criterion 1.4.12 (Text Spacing) requires that content remain functional when line height is set to at least 1.5 times the font size.