I can`t find out why this workes:
input[ type = "text" ]:last-of-type:focus{ border:1px solid red; }
but this doesn`t work:
input[ type = "checkbox" ]:last-of-type:checked{ border:1px solid red; }
The “border” property is just an example, any other properties is also, dismissed!
Given:
It works perfectly in Chrome for me. Presumably you didn’t try it with any properties that are respected on checkboxes in the browsers you were testing in.