To make the label of a checkbox or radio button clickable, you can either -

• Wrap a <label> tag around the input:
   <label><input type="checkbox" name="checkbox" value="value">some text</label> 
  
  or
   
• Use the id of the input field and make it match the for attribute of the label, like so:
   <input type="checkbox" name="checkbox" id="checkbox_id" value="value"> 
 <label for="checkbox_id">some text</label>