css checked work on label code example

Example 1: checked radio button css

//html
<input id="rad1" type="radio" name="rad"/><label for="rad1">Radio 1</label>
<input id="rad2" type="radio" name="rad"/><label for="rad2">Radio 2</label>\

//css
input[type="radio"]:checked+label { font-weight: bold; }

Example 2: not checked css

input[type="checkbox"]:unchecked{
	<style>
}