body {
    background-image: url("fondo.jpg");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

header {
    background-color: #2c3e50;
    color:beige;
    text-align: center;
    padding: 25px;
}

nav {
    background-color: #7acedb;
    text-align: center;
    padding: 15px;
}

nav a {
    color: hwb(193 69% 4%);
    text-decoration: none;
    margin: 0 15px;
    font-size: 18px;
}

main {
    max-width: 900px;
    margin: 30px auto;
    padding: 20px;
}

section {
    background-color: rgb(185, 236, 246);
    padding: 15px;
    border-radius: 10px;
}

article {
    background-color: #c5e9f7;
    padding: 20px;
    margin-top: 20px;
    border-left: 5px solid #34495e;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 30px;
}