Unity WebGL full window

unity-webgl-full-window-css.html

<!-- 

Before add this to the your "index.html" file:

- Remove any style="..." attribute.
- Remove any <style> tag.
- Remove any <link rel="stylesheet"...> tag.

-->

<style>
html, body, canvas, #canvas, #gameContainer, .webgl-content {
  width: 100% !important;
  height: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
  overflow: hidden;
}
#gameContainer {
  margin: 0 auto !important;
}
</style>