<!DOCTYPE html>
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8">
 </head>
 <style>
   .big { font-family: sans-serif; font-size: 40pt; }
   .a { font-family: sans-serif; font-size: 15pt; font-size-adjust: 0.8; }
   .b { font-family: sans-serif; font-size: 30pt; font-size-adjust: 0.4; }
 </style>
 <body>
   <p class="big">1. <span class="b">lines should be the same size</span></p>
   <p class="big">2. <span class="a">lines should be the same size</span></p>
 </body>
</html>