I tried to code a snake game in my second day of coding. But the white color isn't showing up i reloaded the page a few times and it didn't work.

This is the code:

<canvas id="canvas" width="720" height="480"></canvas>

<script>
    let canvas = document.getElementById('canvas');
    let ctx = canvas.getContext('2d');

    
    draw();
    function draw() {
        ctx.fillstyle = 'black';
        ctx.fillRect(0, 0, canvas.width, canvas.height);
        ctx.fillstyle = 'white';
        ctx.fillRect(100, 150, 30, 30);

    }


    function gameLoop() {
        
    }

</script>