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地球の周りを月がぐるぐるするやつ

<!DOCTYPE html class="my-2 rounded-full h-10 w-[16rem] px-4">
<html lang="jp">

<head>
   <!-- Required meta tags -->
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />

   <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/sweetalert/1.1.3/sweetalert.min.js"></script>
   <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/sweetalert/1.1.3/sweetalert.css" />

   <title>Earth and Moon</title>
</head>

<style>
   body {
       background-color: black;
   }
   
   .earth {
       position: absolute;
       top: calc(50% - 100px);
       left: calc(50% - 100px);
   }
   
   .earth img {
       height: 200px;
       position: absolute;
       top: 0;
       left: 0;
       width: 200px;
   }
   
   .moon-container {
       position: absolute;
       top: calc(50% - 25px);
       left: calc(50% - 25px);
   }
   
   .moon {
       animation: spin 20s linear infinite;
       background: none;
       height: 50px;
       pointer-events: none;
       transform-origin: 25px;
       width: 50px;
   }
   
   .moon img {
       height: 50px;
       transform: translateX(-160px) translateY(-160px);
       width: 50px;
   }
   
   .earth img,
   .moon img {
       border-radius: 50%;
       box-shadow: 0 0 12em 1em rgba(110, 140, 200, 0.6);
   }
   
   .earth img,
   .moon img {
       border-radius: 50%;
       box-shadow: 0 0 12em 1em rgba(110, 140, 200, 0.6);
   }
   
   @keyframes spin {
       to {
           transform: rotateZ(360deg);
       }
   }
</style>

<body>
   <article class="earth-demo">
       <div class="earth">
           <img src="https://cssanimation.rocks/images/random/earth.png" alt="" />
       </div>

       <div class="moon-container">
           <div class="moon">
               <img src="https://cssanimation.rocks/images/random/moon.png" alt="" />
           </div>
       </div>
   </article>
</body>

</html>

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