body {
    background: radial-gradient(circle, #00ff00, #000000);
    color: white;
    text-align: center;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.logo img {
    max-width: 200px;
}
.message {
    font-size: 1.5em;
    margin: 10px 0;
}
.form-container {
    margin-top: 20px;
}
input[type="email"] {
    padding: 10px;
    font-size: 1em;
    border: none;
    border-radius: 5px;
    margin-right: 10px;
}
input[type="submit"] {
    padding: 10px 20px;
    font-size: 1em;
    border: none;
    border-radius: 5px;
    background-color: #00ff00;
    color: black;
    cursor: pointer;
}