body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
header {
    background-color: #ffffff;
    color: #0055a5;
    padding: 20px;
    text-align: center;
}
nav {
    background-color: #0055a5;
}
nav a {
    color: white;
    
    margin: 0 15px;
}
nav a:hover {
    text-decoration: none;
    color: yellow;
}
footer {
    background-color: #003366;
    color: #fff;
    text-align: center;
    padding: 10px 0;
}
iframe {
    border: none;
    width: 100%;
    height: 80vh;
    display: block;
    margin: 20px 0;
}
.logo{
    max-height: 85px;
}
#whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #25d366;
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}
#whatsapp-btn i {
    font-size: 24px;
}