Firefox has introduced the ability to animate CSS Grid properties such as grid-template-rows and grid-template-columns, a feature that was previously unimplemented by any browser. This development allows for the interpolation of grid dimensions in animations, providing new possibilities for dynamic layouts, although it comes with limitations such as not supporting mixed unit types. Despite potential performance concerns due to layout recalculations during animations, Firefox's implementation is seen as a significant step forward, offering developers and designers tools to create innovative effects. While other browsers like Chromium offer limited support for CSS Grid animations, requiring workarounds, Firefox's approach is more seamless, paving the way for further experimentation and advancements in CSS capabilities.