*{
margin: 0;
padding: 0;
}
.contenedor{
    margin-left: 15%;
    margin-right: 15%;
    text-align: center;
}
.encabezado{
    background-color: #3E617E;
    display: block;
    height: 15em;
    width: 100%;
    padding-top:5em;
    text-align: center;
    color:white;
    font-size: larger;
}
.nav{
    margin-left: 15%;
    margin-right: 15%;
    width: 70%;
    height:6rem;
    display: block;
}
.nav ul li{
    list-style: none;
    float: left;
    padding:2rem;
    padding-right: 4rem;
}
.nav ul li:hover>a{
   color:teal;
}
.nav ul li:hover>ul{
    display: block;
}
.nav ul li:hover>ul li:hover> a{
    color:white;
}
.nav ul li a{
    text-decoration: none;
    font-family:  "Gill Sans", sans-serif;
    color: black;
}
.submenu{
    padding-right: 1rem;
    display: none;
    position:absolute;
}
.submenu li{
    margin-bottom: 1rem;
    width: 4rem;
    padding-right: 0.5rem;
    background-color:#3E617E;
    border-radius: 4%;
    float: left;
    clear: both;
}
.marginTop{
    margin-top: 1rem;
}
img{
    height: 5rem;
    width: auto;
}
.estiloTexto{
    font-family: 'Courier New', Courier, monospace;
    font-size: large;
}
.caja{
    margin-bottom: 2em;
    padding:2em;
    border-radius: 3%;
    border-style: solid;
}
footer{
    height: 4em;
    background-color:#3E617E;
}