babylonjs playground as causing problem

Hi

the div in code generated from babylon playground, in .zip mode like this:
 <div id="canvasZone">
        <canvas id="renderCanvas"></canvas>
    </div>

I need change code, removing this because resizing or mobile device cause a problem no resizing canvas
<canvas id="renderCanvas"></canvas>

Is this a correct thing or did I do somenthin wrong?