.fondo_ {
	background-color: #ECECEC;
}
.forms {
	font-family: Tahoma, Arial, Verdana;
	font-size: 11px;
	color: #666666;
	text-decoration: none;
	background-color: #F7F7F7;
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: solid;
	border-right-style: solid;
	border-bottom-style: solid;
	border-left-style: solid;
	border-top-color: #B9C9CE;
	border-right-color: #EBEFF2;
	border-bottom-color: #FFFFFF;
	border-left-color: #B9C9CE;
}
.boton {
	font-family: Tahoma, Arial, Verdana;
	font-size: 11px;
	color: #FFFFFF;
	text-decoration: none;
	background-color: #2983CB;
	border: solid;
}
.tx_1 {
	font-family: Tahoma, Arial;
	font-size: 11px;
	color: #333333;
	text-decoration: none;
}
.tx_2 {
	font-family: Tahoma, Arial;
	font-size: 11px;
	color: #FFFFFF;
	text-decoration: none;
}
.tx_2:hover {
	font-family: Tahoma, Arial;
	font-size: 11px;
	color: #FFFFFF;
	text-decoration: underline;
}
.tx_3 {
	font-family: Tahoma, Arial;
	font-size: 11px;
	color: #990000;
	text-decoration: none;
}
.tx_3:hover {
	font-family: Tahoma, Arial;
	font-size: 11px;
	color: #990000;
}	
.tx_4 {
	font-family: Tahoma, Arial;
	font-size: 14px;
	color: #990000;
	text-decoration: none;
}
.tx_4:hover {
	font-family: Tahoma, Arial;
	font-size: 14px;
	color: #990000;
}
.borde2 {	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: none;
	border-right-style: solid;
	border-bottom-style: none;
	border-left-style: solid;
	border-top-color: #F1F0EF;
	border-right-color: #F1F0EF;
	border-bottom-color: #F1F0EF;
	border-left-color: #F1F0EF;
}
<!--
/* CSS Tabs */
#button {
        width: 150px;
		height: 180px;
        border-right: 0px solid #000;
        padding: 0 0 1em 0;
        margin-bottom: 1em;
        font-family: Tahoma, Arial, sans-serif;
                /*'Trebuchet MS', 'Lucida Grande', Verdana, Arial, sans-serif;*/
        font-size : 10px;
        background-color: #990000;
        color: #333;
        }

        #button ul {
                list-style: none;
                margin: 0;
                padding: 0;
                border: none;
                }

        #button li {
                border-bottom: 1px solid #90bade;
                margin: 0;
                list-style: none;
                list-style-image: none;
                }

        #button li a {
                display: block;
                padding: 5px 5px 5px 0.5em;
                border-left: 10px solid #CC0000;
                border-right: 10px solid #993333;
                background-color: #990000;
                color: #fff;
                text-decoration: none;
                width: 100%;
                }

        html>body #button li a {
                width: auto;
                }

        #button li a:hover {
                border-left: 10px solid #993333;
                border-right: 10px solid #CC0000;
                background-color: #990000;
                color: #fff;
                }

        #button li #active {
                border-left: 10px solid #993333;
                border-right: 10px solid #CC0000;
                background-color: #990000;
                color: #fff;
                }
-->
.tabla {
	BORDER-RIGHT: #cccccc 1px solid;
	BORDER-TOP: #cccccc 1px solid;
	FONT-SIZE: 11px;
	BORDER-LEFT: #cccccc 1px solid;
	BORDER-BOTTOM: #cccccc 1px solid;
	FONT-FAMILY: Tahoma, Verdana, Arial, Helvetica;
	BACKGROUND-COLOR: #ffffff;
}
.borde_tab {
	BORDER-RIGHT: #cccccc 1px solid;
	PADDING-RIGHT: 2px;
	BORDER-TOP: #cccccc 0px solid;
	PADDING-LEFT: 2px;
	PADDING-BOTTOM: 2px;
	BORDER-LEFT: #cccccc 1px solid;
	PADDING-TOP: 2px;
	BORDER-BOTTOM: #cccccc 0px solid;
}