BODY {
	font-weight: normal;
	background-color: #666666;
	text-align: left;
}
<!-- PARA TABLAS -->
TD {
	font-family: Tahoma;
	font-size: 11px;
	color: #666666;
    text-align: left;
}
.white {
	color: #FFFFFF;
}
	
.letra_p
{
	font-family: Tahoma, Arial;
	font-size: 11px;
	color: #666666;
	text-align: center;
}
	
.letra_a
{
	font-family: Tahoma, Arial;
	font-size: 16px;
	color: #0000cc;
	text-align: left;
}

	
.letra_t
{
	font-family: Tahoma, Arial;
	font-size: xx-small;
	color: #0000cc;
	text-align: left;
}

.caja{
display:block;
}
.caja *{
display:block;
height:1px;
overflow:hidden;
background:#E8E8E8;
}
.caja1{
border-right:1px solid #f9f9f9;
padding-right:1px;
margin-right:3px;
border-left:1px solid #f9f9f9;
padding-left:1px;
margin-left:3px;
background:#CCFFCC;
}
.caja2{
border-right:1px solid #fdfdfd;
border-left:1px solid #fdfdfd;
padding:0px 1px;
background:#CCFFCC;
margin:0px 1px;
}
.caja3{
border-right:1px solid #f5f5f5;
border-left:1px solid #f5f5f5;
margin:0px 1px;
}
.caja4{
border-right:1px solid #f9f9f9;
border-left:1px solid #f9f9f9;
}
.caja5{
border-right:1px solid #f6f6f6;
border-left:1px solid #f6f6f6;
}
.caja_content{
padding:0px 5px;
background:#E8E8E8;
}