body { 
    font-family: Tahoma, sans-serif; 
    margin: 0; 
    padding: 0; 
    background: #e8f5e9; 
}
header { 
    background: #1b5e20; 
    color: white; 
    padding: 15px; 
    text-align: center; 
}
nav button { 
    margin: 5px; 
    padding: 10px 15px; 
    background: #43a047; 
    color: white; 
    border: none; 
    cursor: pointer; 
}
nav button:hover { 
    background: #66bb6a; 
}
.logo { 
    width: 100px; 
}
main { 
    padding: 20px; 
    max-width: 600px; 
    margin: auto; 
}
h1 { 
    color: #1b5e20; 
    text-align: center; 
}
form { 
    background: white; 
    padding: 20px; 
    border-radius: 8px; 
    box-shadow: 0 0 10px #ccc; 
}
label { 
    display: block; 
    margin-top: 10px; 
    font-weight: bold; 
}
input, select { 
    width: 100%; 
    padding: 8px; 
    margin-top: 5px; 
    margin-bottom: 10px; 
    border: 1px solid #ccc; 
    border-radius: 4px; 
}
button[type="submit"] { 
    background: #2e7d32; 
    color: white; 
    padding: 10px; 
    border: none; 
    width: 100%; 
    border-radius: 4px; 
    cursor: pointer; 
}
button[type="submit"]:hover { 
    background: #388e3c; 
}
footer { 
    background: #1b5e20; 
    color: white; 
    text-align: center; 
    padding: 10px; 
}
@media (max-width: 600px) {
    nav {
        flex-direction: column;
    }

    nav button {
        width: 90%;
    }

    form {
        width: 90%;
    }
}