body {
    font-family: Arial, sans-serif;
    background-color: #f0f8ff;
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 80%;
    padding: 10px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.2);
    text-align: center;
}

.container2 {
    width: 70%;
    padding: 10px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.2);
    text-align: center;
}

.container3 {
    width: 60%;
    padding: 10px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.2);
    text-align: center;
}

h1 {
    color: #007BFF;
}

p {
    font-size: 18px;
}

.button {
    display: inline-block;
    padding: 20px 40px;
    margin: 10px;
    background-color: #007BFF;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #0056b3;
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.button-center {
    display: center;
}

.video-window {
    width: 60%;
    margin: 20px auto;
    padding: 15px;
    background-color: #e7f3ff;
    border: 2px solid #007BFF;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 123, 255, 0.1);
}

video {
    width: 100%;
    height: auto;
    border-radius: 5px;
}

.download-link {
    display: inline-block;
    padding: 8px 16px;
    background-color: #0056b3;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin: 10px 0;
}

.download-link:hover {
    background-color: #003f7f;
}

.back-button {
    background-color: #A9A9A9;
}

.back-button:hover {
    background-color: #808080;
}

@media (max-width: 600px) {
    .button-grid {
        grid-template-columns: 1fr;
    }
    .video-window {
        width: 90%;
    }
}