title: how to customise input field width in bootstrap 3
body: <p>After having removed critical features such as <code>input-xlarge</code> and <code>input-large</code>, what is the substitution for it in bootstrap 3?</p>
  
  <p>Of course I could use <code>col-lg-12</code> etc but that is giving an error in tab pane.</p>
  
  <p>I could also use <code>style = "width:30px;</code>" but then It would loose its responsiveness unlike <code>input-xlarge</code>.Any suggestions etc?</p>