css reduce text size code example

Example 1: css change text size

p {
	font-size: 150% /*px, cm, in, etc.*/; 
}

Example 2: em is relative to its font size

<div id='contain' style='height: 400px'>
  <div style='height: 1.5em'>Test 1</div>

  <div style='height: 50%'>Test 2</div>
</div>