Signals are a quick way to communicate the status of a reader to any element on your site. This can be useful if you want to change the appearance or toggle the visibility of an object based on a reader's registration or payment status.
To establish a connection between Pico and an element, simply add:
"PicoSignal" as a class to the element.
Doing so will result in up to 4 HTML attributes attaching to each of those elements, once Pico has loaded on the page. The attributes will display values as listed below, which you can then use in your CSS to customize the appearance of the element: