model output
Claude Sonnet 4.6

Single Element Spinner
A 0.92T 0.28
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>Spinning Arc</title>
7<style>
8  * {
9    margin: 0;
10    padding: 0;
11    box-sizing: border-box;
12  }
13
14  body {
15    background: #0a0a0a;
16    width: 100vw;
17    height: 100vh;
18    overflow: hidden;
19  }
20
21  .spinner-container {
22    position: absolute;
23    left: 210px;
24    top: 105px;
25  }
26
27  .spinner {
28    width: 30px;
29    height: 30px;
30    border: 2px solid transparent;
31    border-top-color: #00aacc;
32    border-right-color: #00aacc;
33    border-radius: 50%;
34    animation: spin 1s linear infinite;
35  }
36
37  @keyframes spin {
38    0% {
39      transform: rotate(0deg);
40    }
41    100% {
42      transform: rotate(360deg);
43    }
44  }
45</style>
46</head>
47<body>
48  <div class="spinner-container">
49    <div class="spinner"></div>
50  </div>
51</body>
52</html>