body {
    font-family: Arial, sans-serif;
    margin: 0; padding: 0;
    background: #f4f6f8;
    color: #222;
}
header {
    background: #2b4b6f;
    color: #fff;
    padding: 30px 0 10px 0;
    text-align: center;
}
nav ul {
    list-style: none;
    padding: 0;
    margin: 10px 0 0 0;
    display: flex;
    justify-content: center;
    gap: 30px;
}
nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}
section {
    padding: 40px 20px;
    max-width: 900px;
    margin: 30px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}
footer {
    background: #2b4b6f;
    color: #fff;
    text-align: center;
    padding: 15px 0;
    margin-top: 30px;
}
.btn, #agregar-noticia {
    background: #2b4b6f;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
}
form label {
    display: block;
    margin-top: 10px;
}
form input, form textarea {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border-radius: 4px;
    border: 1px solid #ccc;
    margin-bottom: 10px;
}
@media (max-width: 600px) {
    section {
        padding: 20px 5px;
    }
    nav ul {
        flex-direction: column;
        gap: 10px;
    }
}