#contenedor-header {
    background-color: darkblue;
    color: whitesmoke;
    border-radius: 20px;
    padding : 15px;
    display : flex;
    border: 5px white solid;
    margin : 15px;
}

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

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

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

article {
    text-align: center;
    font-size: 20px;
    justify-content: center;
    margin : 15px;
    background: cadetblue;
    border: 5px gray solid;
    border-radius: 20px;
    padding:15px;
}

input{
    text-align: center;
    font-size: 30px;
    background: gray;
    margin: 15px;
    border-radius: 20px;
    padding: 5px;

}

button{
    background: blue;
    color: black;
    font-size: 20px;
    margin: 15px;
    border-radius: 20px;
    padding: 15px; 
    font: menu;
     

}


body{
    background-color: lightblue;
}