/* Tell the browser to render HTML 5 elements as block */  
header, footer, aside, nav, article {  
    display: block;  
}  
html{
	height:100%;
}
body {
	text-align:left; /*Marina*/
	margin:0 auto;
	background-color:#333333;
	font-family: 'Open Sans', sans-serif;
	font-size:87.5%;
	color:#999999;
	height:100%;
}
header{
	background-color:#333333;
	margin:0%;
	width:100%;
	padding:10px 0 0 0;
	height:65px;
}
#contenidos_header{
	margin:0 auto;
	width:990px;
	height:109px;	
}
#contenedor_contenidos{
	margin:0 auto;
	width:990px;
	text-align:left; /*Marina*/
}

nav#menu_principal{
	width:auto;
	background-color:#242223;
	color:#E9E4DC;
	font-weight:bold;
	text-transform:uppercase;
}


section#contenidos{
	width:96%;
	background-color:#333333;
	border: #3b4042 solid 1px;
	margin-top: 2%;
	padding:2% 2% 2% 2%;
}

footer{	
	margin:0% 0% 0% 0%;
	padding:0%;
}


@media screen and (max-width: 478px) {
#contenedor_contenidos{
	margin:0 auto;
	width:98%;
	text-align:left; /*Marina*/
}
#logo img{
	max-width:50%;
	float:left;
}

#logo-login img{
	max-width:100%;
}

#datos_sesion{
	float:right;
}

section#contenidos{
	background-color:#333333;
	border: #3b4042 solid 1px;
	margin-top: 5%;
	padding:3% 2% 8% 2%;
}
.contenedor_botones{
    padding:25px 25px 25px 25px;
}

}


/* Tabled Portrait */
@media (min-width: 479px) and (max-width: 700px) {
#contenidos_header{
	width:100%;
}
	
#contenedor_contenidos{
	margin:0 auto;
	width:98%;
	text-align:left; 
}

#logo img{
	max-width:100%;
}

#logo{
	float:left;	
}

#datos_sesion{
	float:right;
}
}



@media (min-width: 701px) and (max-width: 989px) {
#contenidos_header{
	width:100%;
}
	
#contenedor_contenidos{
	margin:0 auto;
	width:98%;
	text-align:left; 
}

#logo img{
	max-width:100%;
}

#logo{
	float:left;	
}

#datos_sesion{
	float:right;
}
}


@media screen and (min-width: 990px) {

#contenidos_header{
	margin:0 auto;
	width:990px;
	height:109px;
}
#contenedor_contenidos{
	margin:0 auto;
	width:990px;
	text-align:left;
}

#logo img{
	max-width:100%;
}
#logo{
	float:left;	
}

#datos_sesion{
	float:right;
}
}