a:link {color:#0000ff;}		<!-- blau -->
 a:visited {color:#ff00ff;}		<!-- lila -->
 a:hover {color:#00ff00;}		<!-- hellgrün -->	   
 a:active {color:#ff0000;}		<!-- rot -->



a.block{
color:orange; 
background:#0000ff; 
display:block; 
text-align:left; 
width:144px;

border:red solid 0px; 
padding:3px 3px 3px 3px;

text-decoration:none; 
font:bold 14px "comic sans MS", arial, sans-serif;}

a.block:hover{
color:orange;
background-color:#00ff00;} 	<!-- hellgrün -->