Easily perform hiding/displaying an element with an input checkbox. This is great for composing any type of popovers or modals that should remain visible until the user actively hides it.
<input type="checkbox" class="toggle-checked" />
<div class="toggle-target"> Hidden until the checkbox is clicked on</div>
An example modal demo can be viewed on this Codepen. The trick is to use multiple <label> elements with matching for="" attributes to change the checked state of the input element.