Creating Website

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta name = "viewport" content= "width = device-width">
        <title>ToDo List</title>
        <link href = "style.css" rel = "stylesheet" type = "text/css" />
        <script src="script.js"></script>
    </head>
    <body>
        <h1>ToDo List</h1>
        <input id = "input_field" type = "text">
        <button id= "button">Add</button>
        <ul id="todolist">

        </ul>
        </body>
</html>