When writing web content, you often need to highlight important words, stress certain phrases, or quote external sources. Semantic HTML provides specific elements for these tasks, ensuring your meaning is clear not just to readers but also to browsers and assistive technologies.

Two commonly used elements for emphasis are strong and em:

• Use strong to indicate that content is of strong importance, such as warnings or critical instructions;
• Use em to stress a word or phrase, indicating a change in tone or emphasis within the sentence.

For quotations:

• The blockquote element semantically marks a section as a long quotation from another source;
• The cite element is used to reference the source of a quote, book, article, or creative work.