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;
}
header{
    padding: 20px 0;
}
div.contenedor{
    width: 1200px;
    margin: 0 auto;
}
/* Navegación */

.navegacion{
    background-color: #636466;

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

}

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);
}



/* */
div.linea{
    height: 10px;
    background-color: green;
    margin-bottom: 10px;
    margin-top: 10px;
}

/* Contenido principal */
div.contenido{

    margin-top: 30px;
}

section h2{
    text-align: center;
    margin-bottom: 10px;
}
footer{
    background-color: #636466;
    margin-top: 30px;
    padding-top: 40px;
    padding-bottom: 40px;
}
footer h2{
    color: #FFFFFF;
}

footer .contenedor::after{
    content: '';
    display: block;
    clear: both;
}
footer div.nosotros{
    float: left;
    width: 30%;
    color: #FFFFFF
}
div.nosotros h2{
    margin-bottom: 5px;
}