Google, following through on its promise that the material design spec is a "living document," has updated its design guidelines and suggestions again, this time adding more guidance on motion design, along with new sections for growth & communications and expanding panels.

First up, let's look at what's new in motion - Google has given motion design a more comprehensive section, outlining the principles of motion in material design. The section explains that material motion is responsive, natural, aware, and intentional. Transitions should be quick, clear, and cohesive.

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After that brief primer, the motion section goes on to detail - at length - everything from duration and easing to transforming pieces of material and thinking about custom motion patterns that fit in with the material world.

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