index.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Todo</title>
    <link href="style.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>

<body>
   
    <div class="container">
        <h1 class="header"> Todo</h1>
        <div class="main">
            <input id="input" class="textarea" type="text" placeholder="Task to be done"/>
            <button id="button" class="btn btn-primary"><strong>
            </span>Add</span></button>
            <div id="error" class="error-box"></div>
        </div>
        <div id="tasks"></div>
    </div>
  
    </div>


    <footer></footer>
    <script src="app.js" type="text/javascript"></script>
</body>

</html>