   .viewer-controls {
                display: flex;
                gap: 0;
                margin-right: 15px;
                align-items: center;
            }

            .viewer-controls button {
                width: auto;
                min-width: 45px;
                height: 40px;
                display: flex;
                align-items: center;
                justify-content: center;
                background: none;
                border: none;
                border-radius: 8px;
        