<!-- Feature Requests: Please read https://github.com/jquery/jquery/wiki/Adding-new-features Most features should start as plugins outside of jQuery. Bug Reports: Note that we only can fix bugs in the latest version of jQuery. Briefly describe the issue you've encountered * What do you expect to happen? * What actually happens? * Which browsers are affected? Provide a *minimal* test case, see https://webkit.org/test-case-reduction/ Use the latest shipping version of jQuery in your test case! We prefer test cases on https://jsbin.com or https://jsfiddle.net Frequently Reported Issues: * Selectors with '#' break: See https://github.com/jquery/jquery/issues/2824 --> ### Description ### jQuery shouldn't auto-append "px" to CSS variables.: ```js div.css( "--a", 3 ).css( "--a" ); // is: "3px", should be: "3" ``` ### Link to test case ### https://jsfiddle.net/uxj3znv0/