Day 23

 <b> A representation of text whose formatting differs from that of regular text, but which has no importance or priority over the rest of the text, and is usually displayed in bold.

<bdi> <bdi>An element (short for bidirectional isolation ) isolates a piece of text that can be formatted in a different text direction (i.e. right-to-left, like Arabic, or left-to-right, like Latin) from the text around it.

This element is useful when including text whose direction is not known specifically - such as including text from a database - within text that has a specific text direction.