If you've ever seen full-justified text in Microsoft Word that had a really stretched out last line in a paragraph, you don't have to throw up your hands and convert it to left-justified text. In spite of their odd names, these concepts are important to understand if good typography is your goal. Adding whitespace in HTML doesn't always result in spaces on a web page. There are a range of "m-x" classes you can add to paragraph elements where x (0+) represent integers driving increasing space between paragraphs: For example, this will have no space between the paragraphs: