Webflow's Quick Stack can be a powerful tool for creating responsive layouts, but it is not a direct replacement for the grid system. While Quick Stack allows you to easily stack elements vertically or horizontally, it lacks some of the more advanced features and fine-grained control that a dedicated grid system provides.
Quick Stack is great for simpler layouts where you need elements to stack in a specific direction based on screen size. You can use it to create different arrangements of elements, such as columns on desktop and rows on mobile, without having to write complex CSS code.
However, if you require more control over the position and alignment of elements within a grid, or if you need to create complex layouts with custom breakpoints, a dedicated grid system is more suitable. Webflow's native grid system, for example, gives you the ability to create multiple columns and rows, define gap sizes between grid items, and control item order and alignment.
Moreover, a dedicated grid system often provides additional features like auto-fit, auto-fill, and explicit placement, which can be crucial for creating advanced layouts. These features give you more control over how elements are positioned and resized based on available space.
In summary, while Quick Stack is a useful tool for simpler responsive layouts, it falls short when compared to a dedicated grid system in terms of functionality and control. Depending on the complexity and requirements of your design, using the native grid system or even a third-party grid library might be a more appropriate choice.