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                <form id="form">
  <h4>Personal Information</h4>
  <div class="form-group">
    <label for="full-name">Full Name:</label>
    <input type="text" class="form-control" id="full-name" required />
  <div class="form-group">
    <label for="email">Email Address:</label>
    <input type="text" class="form-control" id="email"/>
  <h4>Are you a U.S. Citizen?</h4>
  <div class="form-group">
    <label for="us-citizen-yes">Yes</label>
    <input type="radio" name="us-citizen" id="us-citizen-yes" value="yes"/>
    <label for="us-citizen-no">No</label>
    <input type="radio" name="us-citizen" id="us-citizen-no" value="no"/>
  <h4>Skills (check all that apply)</h4>
  <input type="checkbox" name="skills" id="skill-html" value="html">
  <label for="skill-html">HTML</label><br/>
  <input type="checkbox" name="skills" id="skill-css" value="css">
  <label for="skill-css">CSS</label><br/>
  <input type="checkbox" name="skills" id="skill-js" value="javascript">
  <label for="skill-js">JavaScript</label><br/>
  <input type="checkbox" name="skills" id="skill-jquery" value="jquery">
  <label for="skill-jquery">jQuery</label><br/>
  <input type="checkbox" name="skills" id="skill-parsley" value="parsley">
  <label for="skill-parsley">Parsley JS</label><br/>
  <h4>How did you hear about us?</h4>
  <select name="referral" id="referral" class="form-control">
    <option value="">Choose one...</option>
    <option value="friend">A Friend</option>
    <option value="indeed"></option>
    <option value="website">Another Job Search Website</option>
    <option value="other">Other / None of Your Business</option>
  <h4>Why do you want to work for us?</h4>
  <textarea name="message" id="message" cols="30" rows="10" class="form-control">
  <input type="submit" class="btn btn-default" value="Apply"/>


                #form {
  width: 90%;
  margin: 20px auto;