<script type="text/javascript" charset="utf-8">  
  $(document).on('ready pjax:complete',function() {
 
    // Identify this question
    var thisQuestion = $('#question{QID}');
 
    // First column
    $('td.answer-item:nth-child(2) input:text', thisQuestion).attr('size', 4);
    // Second column
    $('td.answer-item:nth-child(3) input:text', thisQuestion).attr('size', 20);
  });
</script>

<style type="text/css">
 
  /* First column */
  #question{QID} td.answer-item:nth-child(2) input[type="text"] {
    width: 50px;
  }
 
  /* Second column */
  #question{QID} td.answer-item:nth-child(3) input[type="text"] {
    width: 150px;
  }
</style>