@media only screen  and (min-width: 320px) and (max-width:479px) 
{
    .imgTab {
        /*margin-left: -5px;*/
        margin-left: -168px;
    }

    .tab {
        margin-left: 50px;
        width: 271px;
        font-size: 18px;
        padding-top: 6px;
    }
	
	.contact-list {		
		text-align: center;
	}
	
	#copyright {
		text-align: center;
	}
	
	.observaciones {		
		text-align: center;
	}
    #contentMenuSub li {
        text-align: center;
    }
}

@media only screen and (max-width:320px) {
    .tab {
        margin-left: 40px;
        width: 225px;
        font-size: 14px;
        padding-top: 9px;
    }
}