Five CSS bugs AI coding assistants commonly introduce and how to fix them

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AI coding tools like Cursor, Claude, and GitHub Copilot can generate syntactically correct frontend code quickly, but they often skip defensive CSS patterns that prevent real-world UI failures. Common issues include layout shifts caused by loading spinners that change button widths, broken text truncation in flexbox containers due to missing min-width constraints, and tooltips that fail on disabled buttons because native HTML disabled attributes block mouse events. Modals with fixed pixel heights also tend to overflow on smaller screens or mobile devices, cutting off submit buttons from view. Developers can address these problems with targeted fixes such as absolute-positioned spinners, the min-w-0 utility class, aria-disabled in place of native disabled, and dynamic viewport units for modal height.

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