For example, the popular free Contact Form 7 plugin, which has over 5M installations, loads CSS and JS files on all pages – whereas one only needs it to load where the contact form exists.

For example, when styling the “post content” from within the Builderius template, you can target post content child elements using logical/compound CSS selectors – and not via custom code.

WordPress uses a combination of PHP, HTML and CSS to render the appearance of a blog. If the CSS contains invalid code, the blog will fail to display as intended, as the Web browser won't ...