<!DOCTYPE html> <html> <body> <p style="border: 1px solid black">Hello World</p> <div style="border: 1px solid black">Hello World</div> <p>The P and the DIV elements are both block elements, and they will always start on a new line and take up the full width available (stretches out to the left and right as far as it can).</p> </body> </html>