body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: #f4f4f9;
    color: #333;
    text-align: center;
}

header {
    background-color: #27ae60;
    color: white;
    padding: 50px 0;
}

.contenido {
    padding: 100px 20px;
}

.boton {
    display: inline-block;
     background-color: #3498db;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
}

.boton:hover {
    background-color: #2980b9;
}

footer {
    background: #ddd;
    padding: 20px;
    position: fixed;
    bottom: 0;
    width: 100%;
}