Challenge 1: Getting Exact Spacing and Color Values Without Asking the Designer — Solution Walkthrough

The answer:

Per this chapter's own material, Dev Mode's own Inspect functionality
provides exactly this. Selecting the element in Dev Mode surfaces its
exact distance from neighboring elements and its exact color value
directly, without needing to guess by eye from a static image or ask
the designer to look it up manually.

Why this removes the need to ask the designer directly:

Dev Mode is specifically built to surface the precise numbers a
developer needs — dimensions, spacing, colors, font settings — as part
of the same file the designer already created, rather than requiring
a separate conversation or a manually written spec document listing
these values out.

Why this is more reliable than guessing:

Reading the exact spacing and hex value directly from Dev Mode
guarantees accuracy, whereas estimating spacing by eye from a static
exported image risks small inaccuracies that could make the built
interface subtly differ from the actual design.

WHY THIS WORKS AS AN ANSWER
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This exercise checks that a developer's need for exact measurements
and color values is correctly matched to Dev Mode's own Inspect
functionality, rather than manual estimation or direct designer
consultation.