JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <script src="https://cdnjs.cloudflare.com/ajax/libs/tinymce/6.3.2/tinymce.min.js" integrity="sha512-0hADhKU8eEFSmp3+f9Yh8QmWpr6nTYLpN9Br7k2GTUQOT6reI2kdEOwkOORcaRZ+xW5ZL8W24OpBlsCOCqNaNQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
</head>
<body>
   <form method="post">
      <textarea id="default">Hi!</textarea>
   </form>
   <button id="submit">發布文章</button>
</body>
</html>

CSS

button{
   background-color: bisque;
   border: 2px solid white;
   border-radius: 50px;
   height: 2rem;
   padding: 0.4rem 2rem;
   font-size: 14px;
   text-decoration: underline;
   transition:0.5s ease;
}
button:hover{
   cursor: pointer;
   background-color: rgb(94, 94, 94);
   color: aliceblue;
   border: 2px solid white;
   border-radius: 20px;
   height: 3rem;
   font-size: 1rem;
   text-decoration: none;

   padding: 0.3rem 2rem;
   }

JavaScript

tinymce.init({
      selector: '#default'
   });