model output
LLaMA 4 Scout

Only CSS: Joint Animation
A 0.70T 0.45
1<!DOCTYPE html>
2<html lang="en">
3<head>
4    <meta charset="UTF-8">
5    <meta name="viewport" content="width=device-width, initial-scale=1.0">
6    <title>Animation</title>
7    <style>
8        .bar {
9            position: absolute;
10            width: 100px;
11            height: 20px;
12            background-color: #0000ff;
13            transform-origin: top left;
14            transition: transform 1s;
15        }
16        .dot {
17            position: absolute;
18            top: 2px;
19            left: 2px;
20            width: 16px;
21            height: 16px;
22            background-color: #ffff00;
23            border-radius: 50%;
24        }
25    </style>
26</head>
27<body>
28    <div class="bar" style="left: 50px; top: 50px;">
29        <div class="dot"></div>
30    </div>
31
32    <script>
33        const bar = document.querySelector('.bar');
34        let angle = 0;
35
36        function animate() {
37            angle += 2;
38            if (angle > 360) {
39                angle = 0;
40            }
41            bar.style.transform = `rotate(${angle}deg)`;
42            requestAnimationFrame(animate);
43        }
44
45        animate();
46    </script>
47</body>
48</html>