Serifs, also known as serifs, are small decorative strokes located at the ends of characters in some typefaces. In contrast, sans-serif fonts, also called block letters or sans-serif typefaces, are characterized by the absence of these decorative strokes, thus offering a cleaner and simpler appearance.

It is recommended to choose a serif font for longer text, while a sans-serif font is more suitable for a title or concise text. To create an interesting visual contrast, a serif font can be used for the title and a sans-serif font for the body text.

It is essential to ensure that the chosen font is easily legible and appropriate for the screen size on which the text will be displayed.