The document discusses several principles of web design including: The rule of thirds, which divides images and webpages into thirds both vertically and horizontally, with the points where the lines intersect being natural focal points. Using this principle leads to designs that are visually appealing. Other topics covered include using analogous or complementary color schemes, selecting appropriate fonts in terms of size, style and color for readability, structuring text into well-defined paragraphs, and choosing single-color, patterned or image backgrounds that enhance rather than distract from the content. Proper application of these design principles helps create user-friendly webpages.