body {
    font-family: Arial, Helvetica, sans-serif;
    background: #cceee2; /* verde claro exterior */
    color: #222;
    margin: 0;
    padding: 0;
}

header, footer {
    background: #cceee2; /* mismo verde exterior */
    padding: 20px;
    text-align: center;
}

nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #065f46;
}

nav a:hover {
    text-decoration: underline;
}

main {
    max-width: 800px;
    margin: 40px auto;
    background: #ffffff; /* centro blanco */
    padding: 30px;
    border-radius: 8px;
}

h1, h2, h3 {
    color: #111;
}

button {
    background: #16a34a;
    color: #fff;
    border: none;
    padding: 12px 20px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 4px;
}

button:hover {
    background: #15803d;
}

/* Opcional: suavizar los hr si los dejas */
hr {
    border: none;
    height: 1px;
    background-color: rgba(0,0,0,0.1);
    margin: 30px 0;
}