===Other Tools===
[https://validator.w3.org/ '''W3C Markup Validator'''] - Check the markup validity of web documents (HTML, XHTML, etc.)
[https://jigsaw.w3.org/css-validator/ '''W3C CSS Validator'''] - Check the markup validity of CSS
[https://accessible-colors.com/ '''Accessible Colors'''] - Check the contrast ratio of text over a background including size and weight.