JSFiddle - React, Tailwind, and code Playground

by Marcel Hochman

HTML

²<div>
    <textarea id="zonetexte" placeholder="Ecrivez votre texte" autofocus></textarea>
    <input id="ok" type="submit" name="submit" value="ok"  onclick= "myFunction()">       
  </div>

CSS

#zonetexte {
            font-size: 30px;
            line-height: 2;
            display:block; 
            width:100%; height:100%;
            padding:5px; box-sizing:border-box;
            border:7px solid blue; border-radius:15px;
            padding:5px; box-sizing:border-box;
            text-align: left;
            color: blue;
            outline-style: none;
        }
 #ok {
            font-family: Arial;
            font-size: 18px;
            display: block;
            margin: 0 auto;
            text-align:center;  
           margin-top: 20px;
        }

JavaScript

<script>
     function myFunction()                                             
          document.getElementById("ok").style.visibility= 'hidden' ; 
     }
  </script>