body{
background-color:#fff;
}
#login h1{
width:320px;
height:80px;
}
#login h1 a { 
	background-image: url(http://revmexneurociencia.com/wp-content/themes/revmexneuroci/images/admin-logo.png); 
	background-size: 320px 80px;
width:320px;
height:80px;
}