model output
LLaMA 4 Scout

Only CSS: Joint Animation
A 0.75T 0.39
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        body {
9            margin: 0;
10            background-color: #fff;
11            display: flex;
12            justify-content: center;
13            align-items: center;
14            height: 100vh;
15            overflow: hidden;
16        }
17        .rectangle {
18            position: relative;
19            width: 200px;
20            height: 20px;
21            background-color: #007bff;
22            border-radius: 2px;
23            transform-origin: center;
24        }
25        .dot {
26            position: absolute;
27            top: 50%;
28            left: 50%;
29            transform: translate(-50%, -50%);
30            width: 8px;
31            height: 8px;
32            background-color: #ffff00;
33            border-radius: 50%;
34        }
35    </style>
36</head>
37<body>
38    <div class="rectangle">
39        <div class="dot"></div>
40    </div>
41    <script>
42        const rectangle = document.querySelector('.rectangle');
43        rectangle.style.transform = 'rotate(0deg)';
44        let angle = 0;
45        function animate() {
46            angle += 1;
47            if (angle > 360) angle = 0;
48            rectangle.style.transform = `rotate(${angle}deg)`;
49            requestAnimationFrame(animate);
50        }
51        animate();
52    </script>
53</body>
54</html>