Created a working stopwatch with minute and second hands using only C…

[vlason97]

• Keyframes implemented using from/to + transform with rotate property
• Stopwatch is centered and has the correct arrows size
• All Typical Mistakes from the BEM lesson theory are checked.
• Code follows all the [Code Style Rules ❗️]

[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it fully implements the required stopwatch behavior and matches the visual and BEM requirements from the task. The stopwatch is correctly centered via flexbox, sized at 80vmin, and styled with the specified dotted border and circular shape. Both the minute and second hands have the correct lengths, widths, and colors, start at the top, and use only CSS animations with proper from/to keyframes and transform: ... rotate(...) as required [CHECKLIST ITEM #1]. The seconds hand rotates smoothly in 60 seconds with a linear timing function, and the minutes hand uses steps(60) over 3600 seconds, which satisfies the core timing requirements. The stopwatch--speed-up BEM modifier is implemented correctly, reducing the durations to 10s and 600s and is applied in the HTML, while the base behavior would remain correct if the modifier is removed. BEM naming is consistent (stopwatch, stopwatch__center, stopwatch__minute, stopwatch__second, stopwatch--speed-up) and avoids the typical mistakes mentioned in the BEM checklist [CHECKLIST ITEM #3]. The small BackstopJS visual regression failure is a marginal pixel-difference likely caused by rendering variance and does not indicate a functional or requirement-related problem. Overall, your implementation is clean, meets the checklist items, and doesn’t contain critical blockers, so it can move forward as is. Great work on aligning precisely with the timing and animation constraints of the task.

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[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it meets all functional and visual requirements for the stopwatch and follows the BEM and animation checklist correctly. The stopwatch is properly centered on the page, sized to 80vmin, and uses the required dotted circular border and colors for the minute, second, and center elements. Both hands start at the top, complete a full rotation in the specified times, and use CSS-only animations with from/to keyframes and transform: rotate(...) as required [CHECKLIST ITEM #1]. The seconds hand runs smoothly with a 60-second linear animation, and the minute hand uses steps(60) over 3600 seconds, aligning with the task’s behavior constraints. Your stopwatch--speed-up modifier correctly adjusts the durations to 10 seconds and 10 minutes and is applied in the HTML, while the base stopwatch still works without it. BEM naming is clean and consistent, avoiding typical mistakes and satisfying the code style expectations [CHECKLIST ITEM #3]. Overall, this is a solid, standards-compliant implementation with no critical blocking issues—well done.

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