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stopwatch #4175

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e2996bd
add task solution
AdrJeeN Jul 1, 2026
7e9e75d
fix task
AdrJeeN Jul 1, 2026
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7 changes: 5 additions & 2 deletions readme.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# Stopwatch task

Create a working stopwatch with minute and second hands using **only CSS animations**.

- Use the reference image below to create a stopwatch:
- place it in the center of the page (vertically and horizontally)
- stopwatch must have a size of `80vmin` x `80vmin`
Expand All @@ -14,6 +15,7 @@ Create a working stopwatch with minute and second hands using **only CSS animati
- For minutes hand use steps animation with 60 steps. It should take the `60min` for the minutes hand to make a full circle.

In addition to the basic functionality create a BEM modifier called `speed-up` for your stopwatch block:

- it will take only `10s` for the seconds hand to make a full circle (change animation duration)
- it will take only `10min` for the minutes hand to make a full circle (change animation duration)

Expand All @@ -23,7 +25,7 @@ In addition to the basic functionality create a BEM modifier called `speed-up` f

> Here are the [Layout Tasks Instructions](https://mate-academy.github.io/layout_task-guideline)

*Important note*: In this task, you are allowed to link `*.scss` files directly in HTML `<link>` tags using `href` attribute.
_Important note_: In this task, you are allowed to link `*.scss` files directly in HTML `<link>` tags using `href` attribute.
This is possible because [we use the Parcel library](https://en.parceljs.org/scss.html) to bundle your solution's source code.

![reference image](reference.png)
Expand All @@ -32,7 +34,8 @@ This is possible because [we use the Parcel library](https://en.parceljs.org/scs
## Checklist

❗️ Replace `<your_account>` with your GitHub username and copy the links to the `Pull Request` description:
- [DEMO LINK](https://<your_account>.github.io/layout_stop-watch/)

- [DEMO LINK](https://AdrJeeN.github.io/layout_stop-watch/)

❗️ Copy this `Checklist` to the `Pull Request` description after links, and put `- [x]` before each point after you checked it.

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6 changes: 5 additions & 1 deletion src/index.html
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Expand Up @@ -17,6 +17,10 @@
/>
</head>
<body>
<h1>Stop watch</h1>
<div class="stopwatch stopwatch--speed-up">
<div class="stopwatch__minutes-hand"></div>
<div class="stopwatch__seconds-hand"></div>
<div class="stopwatch__center"></div>
</div>
</body>
</html>
79 changes: 79 additions & 0 deletions src/styles/index.scss
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$stop-watch-size: 80vmin;
$border-weight: 1vmin;
$border-color: #000;
$minute-hand-length: 20vmin;
$minute-hand-width: 3vmin;
$minute-hand-bgc: #0700ff;
$second-hand-length: 38vmin;
$sedond-hand-width: 1.5vmin;
$second-hand-bgc: #2c8000;
$center-size: 5vmin;
$center-bgc: #f6a603;

@mixin hand {
position: absolute;
bottom: 50%;
left: 50%;
transform: translateX(-50%);
}

body {
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
margin: 0;
}

.stopwatch {
height: $stop-watch-size;
width: $stop-watch-size;
border: $border-weight dotted $border-color;
border-radius: 50%;
position: relative;

&__minutes-hand {

@mateacademy-ai-mentor mateacademy-ai-mentor Jul 1, 2026

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This violates checklist item Keyframes implemented using from/to + transform with rotate property for the minutes hand in base state: you never assign any animation to .stopwatch__minutes-hand without the speed-up modifier. You need a default animation using these keyframes so the watch works when mentors remove stopwatch--speed-up.

@include hand;

width: $minute-hand-width;
height: $minute-hand-length;
background-color: $minute-hand-bgc;
transform-origin: center bottom;
animation: rotate-clock 3600s steps(60, end) infinite;
}

&__seconds-hand {
@include hand;

width: $sedond-hand-width;
height: $second-hand-length;
background-color: $second-hand-bgc;
transform-origin: center bottom;
animation: rotate-clock 60s linear infinite;
}

&__center {
width: $center-size;
height: $center-size;
background-color: $center-bgc;
border-radius: 50%;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}

&--speed-up .stopwatch__minutes-hand {
animation-duration: 600s;
}

&--speed-up .stopwatch__seconds-hand {
animation-duration: 10s;
}
}

@keyframes rotate-clock {
from {
transform: translateX(-50%) rotate(0deg);
}
to {
transform: translateX(-50%) rotate(360deg);
}
}
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