body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 400px;
    width: 100%;
    background-color: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

div {
    margin-bottom: 15px;
    text-align: left;
}

label {
    font-size: 14px;
    margin-bottom: 8px;
    display: block;
    color: #bbbbbb;
}

input[type="range"] {
    width: 100%;
    margin-top: 10px;
    background-color: #333;
}

input[type="checkbox"] {
    margin-right: 8px;
}

button {
    background-color: #424242;
    color: #ffffff;
    padding: 10px;
    border: none;
    width: 100%;
    cursor: pointer;
    font-size: 14px;
    margin-top: 15px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

    button:hover {
        background-color: #616161;
    }

input[type="text"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #333;
    border-radius: 4px;
    background-color: #1c1c1c;
    color: #ffffff;
    font-size: 14px;
    margin-top: 10px;
    text-align: center;
}

#notification {
    font-size: 12px;
    margin-top: 10px;
    color: #00e676;
    text-align: center;
}

@media screen and (max-width: 600px) {
    body {
        padding: 20px;
    }

    button {
        width: 100%;
    }
}