Image is not centered in itch.io canvas

[nazimboudeffa]

I am making a game with a new style of graphics from blackthornprod on youtube and when I draw my background on the Gimp then add it to the game with the same proportions, I mean letting the proportions of the Gimp by default (640x400) and changing it in my Itch game the background is not centered

game = new Phaser.Game(640, 400, Phaser.CANVAS, 'example', { preload: preload, create: create});

<style>
    body {
    margin: 0;
    padding: 0;
    background-color: #e5e5e5;
  }

  canvas {
    display: block;
    margin: auto;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
  }
</style>

If someone have an idea on how to fix that

[QUIPHOP]

There is additional size options on the edit game page, try to change it

[nazimboudeffa]

I am looking into the Edit Game page but don’t find why

I really don’t know maybe that i have setted the background color and use an image background that doesn’t use transparency