STRONG is used to make strongly emphasized text, and the results are identical to that of the B tag. However, STRONG is preferred as it allows the browser to distinguish between strongly emphasized text and other text which must be drawn in boldface in the case where boldface is not available.
Do not use STRONG if your text requires boldface; use B instead.
<STRONG>This text is STRONG, </STRONG>and this text is REGULAR. As you can see <STRONG>STRONG TEXT </STRONG>and <B>BOLD TEXT </B>are the same.
This text is STRONG, and this text is REGULAR. As you can see STRONG TEXT and BOLD TEXT are the same.