model output
Claude Sonnet 4.6

Exploring Bourbon
A 0.87T 0.30
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  * {
9    margin: 0;
10    padding: 0;
11    box-sizing: border-box;
12  }
13
14  body {
15    width: 1024px;
16    height: 768px;
17    background-color: #7d6568;
18    display: flex;
19    align-items: center;
20    justify-content: center;
21    overflow: hidden;
22  }
23
24  .box {
25    width: 46px;
26    height: 46px;
27    background: linear-gradient(to bottom, #d4e87a, #a8c84a);
28    animation: morph 1.2s ease-in-out infinite alternate;
29  }
30
31  @keyframes morph {
32    0% {
33      border-radius: 4px;
34    }
35    50% {
36      border-radius: 40%;
37    }
38    100% {
39      border-radius: 4px;
40    }
41  }
42</style>
43</head>
44<body>
45  <div class="box"></div>
46</body>
47</html>