W3c is your body that attempts to standardize these items, they create The principles, then programmers publish their rendering motor to interpret All those guidelines. But nobody retains you from using Javascript to alter the DOM or assigning courses dynamically as well as concatenating designs with your respective programming language. https://extrabookmarking.com/story19387899/everything-about-prestashop-social-media-like-block-based-on-selected-categories-languages-pages