[Proyecto] Haga lo que hicimos en aula.css

body {
    background-color: indigo;
    color: white;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
}

header {
    background-color: darkslateblue;
    padding: 20px;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

main {
    padding: 50px 20px;
}

#presentacion a {
    display: inline-block;
    margin: 10px;
    padding: 10px 20px;
    background-color: white;
    color: indigo;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
}

#presentacion a:hover {
    background-color: lightgray;
}

footer {
    background-color: darkslateblue;
    padding: 10px;
    position: absolute;
    width: 100%;
    bottom: 0;
}