While the WordPress Editor provides traditional alignment options, we do not recommended you use them, as they don’t adhere to best design practices. WordPress uses something called inline CSS for alignment. Inline styles blur the line between content structure and visual presentation, and ultimately using them makes it difficult to make site-wide changes or maintain consistency across pages.
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Instead of using WordPress’s built-in alignments, it’s preferable to use CSS classes defined in a stylesheet—the approach Less uses.
To create elements with alignment add the .left, .right, or .center class to your paragraph or image.
<img class="right" src="http://lesswp.com/watercolor-wireframe.webp" alt="Watercolor website wireframe" width="150" height="150" />