Considering that the :checked pseudo-course relates to the checkbox, #demo:checked + label will only use in the event the checkbox is checked. @Sparky672, Just about anything: caniuse.com/#feat=css-sel2 (IE7 supports :active also but just isn't outlined simply because it doesn't guidance several of the other selectors) As an example, in place https://johnnybnxih.alltdesign.com/not-known-facts-about-trusted-partner-58225396