If need to add style to h2, the height of the div to 30 px, is the style of the h2 should be

  code is as follows:  

h2 {height: 38 px; The line - height: 38 px; Margin - top: 0 px;//like IE9, automatically add style to h2, if not, add in IE9 is messed up

This concludes the body part