Một số đều lưu ý về Typography

Typography is the art and technique of arranging type to make written language readable and beautiful

1. Use a font-size between 15 and 25 pixels
   The optimal point size for print is usually between 10-12 points while that for web, the optimal point size is between 15-25 points.
   In CSS, you should set font-size in ems or rems than pixels as the former are scalable in nature. Recently, there has been much talk about fluid typography using the newly introduced units vw and vh.
2. Use (really) big font sizes for headlines
   Some of us may very well have body fonts that range between 20px - 24px and headers that are 30px - 70px, but that doesn’t always mean your website's typography is without issue.
3. Use line spacing betwwen 120 and 150%
4. 45 to 90 characters per line
5. Use good font