#contenedor-header {
    background-color: lightgreen;
    color: black;
    border-radius: 20px;
    padding : 15px;
    display : flex;
    border: 5px green solid;
    margin : 15px;
}
#header-titulos{
    width : 75%;
    text-align: center;
    padding: 15px;
    margin : 15px;
}

#header-imagen{
    width: 25%;  
    border-radius: 20px;
}

#navega {
    margin : 15px;
    background-color: cadetblue;
    border-radius: 20px;
    border: 5px orange solid;
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
    margin : 15px;
}

li {
  background-color: darkseagreen;
  color: black;
  font-size: 20px;
  border-radius: 20px;
  padding:15px;
  margin:3px;
}

a {
    color : black;
    text-decoration: none;
    padding: 15px;
}

article {
    display:flex;
    justify-content: center;
    margin : 15px;
    background: cadetblue;
    border: 5px orange solid;
    border-radius: 20px;
    padding:15px;
}

article div h1{
    text-align: center;
}

#contenedorPrincipal{
    display:flex;
}

section {
  width: 100%;  
}

body{
    background-color: lightblue;
}