body {
        padding-top: 87px;
    }

    .container {
        display: flex;
        justify-content: space-between;
    }

    .main-video {
        flex: 2;
        position: relative;
        text-align: center;
    }

    .main-video iframe {
        width: 100%;
        height: 400px;
    }

    .video-title {
        font-size: 18px;
        margin: 15px 0;
        color: black;
        font-family: "Montserrat", sans-serif;
    }

    .video-list-container {
        flex: 1;
        margin-left: 20px;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }

    .video-list-frame {
        padding: 15px;
        margin-top: 90px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        height: 400px;
        overflow-y: auto;
        width: 400px;
    }

    .video-list {
        padding: 0;
        list-style: none;
    }

    .video-list li {
        margin-bottom: 15px;
        display: flex;
        align-items: center;
        cursor: pointer;
        transition: background-color 0.3s;
    }

    .video-list li:hover {
        background-color: #e0e0e0;
    }

    .video-list img {
        width: 70px;
        height: auto;
        margin-right: 15px;
    }

    .toggle-button {
        cursor: pointer;
        font-size: 18px;
        color: black;
        margin-bottom: 10px;
        margin-top: 20px;
        font-family: "Fredoka", sans-serif;
        font-weight: bold;
        font-family: cursive;
    }

    .warning-message {
        background-color: #ffcccb;
        color: #d8000c;
        border: 1px solid #d8000c;
        padding: 10px;
        text-align: center;
        margin-bottom: 20px;
        font-family: fantasy;
    }

    .navigation-buttons {
        display: flex;
        justify-content: space-between;
        margin-top: 35px;
    }

    .navigation-buttons button {
        background-color: #ffff00;
        color: black;
        border: none;
        margin-top: -30px;
        margin-bottom: 10px;
        padding: 10px 20px;
        cursor: pointer;
        font-size: 18px;
        border-radius: 5px 5px 5px 5px;
    }

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

    .video-section-title {
        background-color: #007bff;
        color: black;
        padding: 10px;
        border-radius: 5px;
        cursor: pointer;
        margin-top: 10px;
        text-align: center;
    }

    @media (max-width: 1023px) {
        #container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .main-video {
            position: relative;
            text-align: center;
            width: 100%;
        }

        .main-video iframe {
            width: 100%;
            height: 400px;
        }

        .video-title {
            font-size: 18px;
            margin: 15px 0;
            color: black;
            font-family: "Montserrat", sans-serif;
        }

        .video-list-container {
            margin-top: 20px;
            width: 100%;
        }

        .video-list-frame {
            padding: 15px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            overflow-y: auto;
            max-height: 400px;
            width: 100%;
        }

        .toggle-button {
            cursor: pointer;
            font-size: 18px;
            color: black;
            margin-bottom: 10px;
            margin-top: 20px;
            font-family: "Fredoka", sans-serif;
            font-weight: bold;
            font-family: cursive;
        }

        .warning-message {
            background-color: #ffcccb;
            color: #d8000c;
            border: 1px solid #d8000c;
            padding: 10px;
            text-align: center;
            margin-top: 50px;
            margin-bottom: 20px;
            font-family: fantasy;
        }

        .navigation-buttons {
            display: flex;
            justify-content: space-between;
            margin-top: 10px;
        }

        .navigation-buttons button {
            background-color: #ffff00;
            color: black;
            border: none;
            margin-top: 10px;
            margin-bottom: 10px;
            padding: 10px 20px;
            cursor: pointer;
            font-size: 18px;
            border-radius: 5px;
        }

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

        .video-section-title {
            background-color: #007bff;
            color: black;
            padding: 10px;
            border-radius: 5px;
            cursor: pointer;
            margin-top: 10px;
            text-align: center;
        }
    }