input type=radio element


with label first button checked


with label + disabled


with label + fieldset + legend

gender

Code

<form>
	<fieldset id="input4">
		<legend>gender</legend>
		<label><input type="radio" name="sex" value="male" checked> Male</label>
		<label> <input type="radio" name="sex" value="female"> Female</label>
	</fieldset>
</form>

Reference