kotak centang simbolo en tabla en html

<form id="demo"> 
<p><input type="checkbox" name="chec[]" id="checkbox1" checked=""><label for="checkbox1">checkbox 1</label></p>
<p><input type="checkbox" name="chec[]" id="checkbox2"><label for="checkbox2">checkbox 2</label></p>
</fieldset>
<fieldset> 
<p><input type="radio" name="rad" id="radio1" checked=""><label for="radio1">botón de radio 1</label></p>
<p><input type="radio" name="rad" id="radio2"><label for="radio2">botón de radio 2</label></p>
</form>
Poor Penguin