p.seguridad{
        color:blue;
	text-align:center;
        font-size: 70px; 
}



p.Hola{ 
        color:blue;
	text-align:center;
        font-size: 40px; 
}

p.indice{ 
        color:black;
	text-align:left;
        font-size:45px; 
}

div {
	background-image: url("imagenes/seguridad4.jpg");
	background-repeat: repeat;
        background-size: 100%;
	color: black;

}

.youtube {
        width:560;
        frameborder:0;
	height:315;

}