title: html select only one checkbox in a group
body: <p>So how can I only allow a user to select only one checkbox?</p>
  
  <p>I know radio buttons are "ideal", but for my purpose...it's not.</p>
  
  <p>I have a field where users need to select either or of the two options, but not both. The problem is that I need my users to also be able to unselect their option, and this is where radio buttons fail because once you select the group, you have to choose an option.</p>
  
  <p>I will be validating the info via php, but I'd still like to restrict the users to one answer if they want to give it.</p>