Originally published at: http://www.sitepoint.com/screencast-building-smarter-ui-interactions-using-checked/
The :checked pseudo-class is an often overlooked gem in CSS. When paired with checkboxes, radio buttons, and some accompanying CSS selectors, such as the direct sibling combinator (+), it opens up some powerful applications.
Using :checked means that your CSS can react to state alone, without the need for JavaScript. This makes :checked a must in the CSS developer’s utility belt.
Watch Ryan guide you through building an iOS toggle switch using these techniques. You can download the code sample from GitHub.
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