JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.tiny.cloud/1/9mn1wgvqyn3l3rzc3zj66i5p7gqo8rb2tfg9igjfjxqqq9k3/tinymce/6/tinymce.min.js"></script>
<form>

        <textarea id="default"></textarea>
        <input class="btn" type="button" value="發佈文章">

</form>

CSS

.btn{
    width: 100%;
    height:30px;
}

JavaScript

tinymce.init({
    selector: 'textarea#default',
    language: 'zh_CN',
});