<!DOCTYPE html>
<html>
 <head>
<meta charset="utf-8">
  <title>
   center tag
  </title>
  <style>
  p.ctr { text-align: center; }
  </style>
 </head>
 <body>
  <center>
   <p>This text will be center-aligned.</p>
  </center>

  <p>Nomal left text</p>

  <p class="ctr">Center aligned by CSS</p>

 </body>
</html>