Hi @jmetair
QuickSight free-form layout offers precise, pixel-level control over dashboard design, allowing elements to overlap and be placed anywhere on the canvas.
For mobile-friendly dashboards, consider using the tiled layout to ensure optimal viewing across devices. In contrast, the tiled layout is optimized for responsiveness. On mobile devices, it displays visuals in a vertical stacked view, adapting to different screen sizes.
Please refer the below QuickSight documentation and community post this might be helpful for you.