.vinculos {
	font-family: Arial, Helvetica, sans-serif;
	font-size: x-small;
	font-style: normal;
	text-decoration: none;
	color: #FFFFFF;

}
.div_container { text-align:left; margin:auto; background-color:#FFF; width:780px; }
.bt_twitter {
	background:transparent url(imagenes/icono-twitter-dattatec.png) no-repeat right top;
	display:block;
	height:117px;
	margin-top:150px;
	position:fixed;
	right:0;
	width:37px;
}

.bt_facebook {
	display:block;
	height:117px;
	margin-top:200px;
	position:fixed;
	right:0;
	width:38px;
	background-color: transparent;
	background-repeat: no-repeat;
	background-position: left top;
}

.bt_blog {
	background:transparent url(imagenes/tab-dattatecblog.png) no-repeat right top;
	display:block;
	height:147px;
	margin-top:300px;
	position:fixed;
	right:0;
	width:40px;
}