.content-container {
            position: relative;
            height: 1000px;
            border-radius: 8px;
            overflow-x: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .vertical-toggle-btn {
            position: sticky;
            top: 50vh;
            transform: translateY(-50%);
            margin-left: auto;
            width: fit-content;
            background-color: #007bff;
            color: white;
            border: none;
            padding: 15px 8px;
            cursor: pointer;
            border-top-left-radius: 6px;
            border-bottom-left-radius: 6px;
            display: flex;
            writing-mode: vertical-rl;
            align-items: center;
            justify-content: center;
            gap: 6px;
            transition: right 0.2s ease, background-color 0.2s ease;
            z-index: 10;
        }

        .vertical-toggle-btn .arrow {
            display: inline-block;
            transition: transform 0.3s ease;
        }

        .vertical-toggle-btn:hover {
            right: -4px;
            background-color: #0056b3;
        }

        .side-panel {
            position: absolute;
            top: 0;
            right: -850px;
            width: 850px;
            height: 100%;
            background-color: #ffffff;
            box-shadow: -4px 0 10px rgba(0, 0, 0, 0.1);
            transition: right 0.3s ease-in-out;
            padding: 20px;
            box-sizing: border-box;
            z-index: 5;
            display: flex;
            flex-direction: column;
        }

        .side-panel.open {
            right: 0;
        }

        .side-panel.open~.vertical-toggle-btn .arrow {
            transform: rotate(180deg);
        }

        .side-panel h3 {
            margin-top: 0;
            color: #333;
        }

        .side-panel p {
            color: #666;
            font-size: 13px;
            line-height: 1.5;
        }