html{
    box-sizing: border-box;
}
*, *:before,*:after{
    box-sizing: inherit;
}
*{
    margin: 0;
    padding: 0;
}
body{
    font-family: Montserrat, Arial, Helvetica, Verdana;
    background-image: url(fondo.jpg);
    background-repeat: no-repeat;
    background-size: 100%;
    background-attachment: fixed;
}
/* Navegación */

.navegacion{
    background-color: #636466;

}
nav{
    width: 1200px;
    margin: 0 auto;
    position: relative;
    margin-top: 100px;

}

nav ul{
    list-style: none;
}

nav > ul > li{
    float: left;
}

nav ul::after{
    content: '';
    display: block;
    clear: both;
}

nav ul li a{
    display: inline-block;
    width: 200px;
    color: #FFFFFF;
    text-decoration: none;
    text-align: center;
    padding: 5px;
}

nav ul li a:hover{
    background-color: #008BE4;
}

/* Segundo nivel*/

nav ul ul{
    position: absolute;
    top: 100%;
    background-color: rgba(0, 184, 228, 1);
    display: none;
}

nav ul li:hover > ul{
    display: flex;
    flex-wrap: wrap;

} 



nav ul li ul li ul li > a{
    background-color: green;
}


nav ul li:hover{
    background-color: rgba(0, 184, 228, 1);
}


main.contenido-principal{

    margin-bottom: 20px;

}

div.color div{
    width: 1263px;
    height: 10px;
    background-color: green;
    margin-bottom: 10px;
    margin-top: -110px;

}
div.parrafo{
    display: flex;
    justify-content: center;
    justify-content: space-around;
    background-color: gray;
    margin-bottom: 20px;
    margin-top: 20px;

}

div.parrafo h2.ex{
    margin-left: -140px;
}




h2.sec{
    padding-top: 50px;
    text-align: center;
    margin-bottom: 25px;
    font-size: 50px;
    color: black;

}
div.explicacion{
    display: flex;
    justify-content: center;
    justify-content: space-around;
    margin-top: 20px;

}
/**
div.explicacion p{
    width: 625px;
    padding: 5px 5px;
    border: PowderBlue 5px solid;
    border-radius: 20px;

}
**/
div.explicacion iframe{
    height: 527px;
    margin-top: 20px;

}
/**
div.explicacion iframe.geo{
    margin-left: 0px;

}
**/

div.formulario{
    margin-top: 50px;
    text-align: center;
    height: 320px;
}

div.formulario h2{
    background: gray;
}


div.titforoval{
    display: flex;
    justify-content: center;
    justify-content: space-around;
    background-color: gray;
    margin-bottom: 20px;
    margin-top: 60px;

}

div.titforoval h2.val{
    margin-left: -140px;
}

div.valoracion{
    display: flex;
    justify-content: center;
    justify-content: space-around;
    margin-top: 20px;


}

div.valoracion iframe{
    height: 300px;
    margin-top: 20px;

}

div.valoracion iframe.foro{
    height: 500px;
    margin-top: 20px;

}

h2{
    color: gray;
}