body{ 
  color: #003300; }

 :link {color:  #330000}  /* for unvisited links */
 :visited {color:  #993333}  /* for visited links */
 :active {color: white}  /* when link is clicked */
:hover {color: #003300}    /* when mouse is over link */
h3, h2{
color: green;
text-align: center;
text-decoration: underline;
}

<p>
 <a href="http://jigsaw.w3.org/css-validator/">
  <img style="border:0;width:88px;height:31px"
       src="http://jigsaw.w3.org/css-validator/images/vcss" 
       alt="Valid CSS!">
 </a>
</p>