body{
    font-family:Arial;
    margin:0;
    background:#f4f4f4;
    }
    
    header{
    background:#1f4d36;
    color:white;
    padding:20px;
    text-align:center;
    }
    
    nav{
    background:#333;
    text-align:center;
    padding:10px;
    }
    
    nav a{
    color:white;
    margin:15px;
    text-decoration:none;
    }
    
    .hero{
    background:#2c7a4b;
    color:white;
    text-align:center;
    padding:100px;
    }
    
    .container{
    max-width:1000px;
    margin:auto;
    padding:40px;
    }
    
    .card{
    background:white;
    padding:20px;
    margin-bottom:20px;
    box-shadow:0 0 10px rgba(0,0,0,0.1);
    }
    
    footer{
    background:#222;
    color:white;
    text-align:center;
    padding:20px;
    }
    
    .whatsapp{
    position:fixed;
    bottom:20px;
    right:20px;
    background:#25D366;
    color:white;
    padding:15px;
    border-radius:40px;
    text-decoration:none;
    }