body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    margin-top: 60px;
    padding: 20px;
}

h2 {
    color: #04446b;
}

button {
    background-color: #b40453;
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    margin-top: 20px;
}

button:hover {
    background-color: #860336;
}

#passphrase {
    margin-top: 20px;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    border: 1px solid #ddd;
    color: #04446b;
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    button {
        width: 100%;
        padding: 15px;
        font-size: 18px;
    }

    #passphrase {
        padding: 15px;
    }
}

#logo_div {
    position: absolute;
    top: 1%;
    left: 1%;
}

#logo_div img {
    width: 130px;
    height: auto;
    border-radius: 5px;
    border: 2px solid #04446b;
}