FrontendHaltCSS·Intermediate·Conceptual·1 min read
Why do most teams apply a global box-sizing: border-box reset?
Short interview answer
It makes sizing predictable: a component's declared width stays its actual width regardless of how much padding or border is later added, avoiding a common class of layout overflow bugs in nested or responsive components.
Key takeaway
Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.