index.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Space Invaders</title>
    <link rel="stylesheet" href="css/main.css">
</head>

<body onkeydown="onKeyDown(event)">
    <div class="header">
        <img src="img/sih.png" alt="">
        <h1>SCORE : <span>0</span></h1>
        <h3>SUPER SHOOTS LEFT <span>3</span></h3>
    </div>
    <button class="start" onclick="init()">START GAME</button>
    <div class="modal">
        <h3><span></span></h3>
        <button onclick="restartGame()">Restart</button>
    </div>
    <div class="container">
        <table class="board"></table>
    </div>

    <script src="./js/utils.js"></script>
    <script src="./js/game.js"></script>
    <script src="./js/aliens.js"></script>
    <script src="./js/hero.js"></script>
</body>

</html>