我如何修复复选框内部

When I click on my page in the checkbox the inside of checkbox is changed. I want to fix for one element if he is empty will be empty for all moment.

<td class="pad30">
  <?php if($motifAbsence == 1) { ?>  
    <input type="checkbox" <?php if($isMotif = "Oui") echo 'checked="checked" '; ?> name="full"   /> 
  <?php } else { ?> 
     <input type="checkbox"  name="empty"  />          
  <?php } ?>

1. You can add onclick="return false;" onkeydown="return false;" for that purpose:-

<input type="checkbox" name="empty" onclick="return false;" onkeydown="return false;"/>

2. You can use disabled="disabled" also:-

<input type="checkbox" name="empty" disabled="disabled"/>

</div>