Add stopwatch with CSS animations

[enot333lol333-coder]

DEMO LINK

• Keyframes are implemented using from/to parameters + transform property with rotate value.
• Stopwatch is centered and has hands of the correct size.
• All the theory from the BEM Typical Mistakes lesson has been checked.
• The code follows all the Code Style Rules.

[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it fully implements the required stopwatch functionality and meets all checklist items. The stopwatch is correctly centered, sized at 80vmin x 80vmin, and styled with the proper circular dotted border and center circle colors and dimensions. Both the minute and second hands start from the top, use only CSS animations, and have correct lengths, widths, colors, and infinite rotation behavior. The seconds hand rotates smoothly in 60s with a linear timing function, and the minutes hand uses steps(60, end) with a 3600s duration, matching the 60 steps / 60 minutes requirement. The stopwatch--speed-up BEM modifier is applied correctly and properly overrides the animations to 10s and 600s without breaking the base behavior. BEM naming and SCSS structure are clean and avoid the typical mistakes described in the theory. Overall, this is a solid, standards-compliant implementation of the task—well done.

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