<div class="unity-container-wrapper">
    <div class="unity-container">
        <iframe
            src="Insert webgame Url here" //example "https://cqu-intar.s3-ap-southeast-2.amazonaws.com/CyberHeroes/index.html"
            allowfullscreen="true"
            webkitallowfullscreen="true"
            mozallowfullscreen="true"
            allow="autoplay"
            frameborder="0">
        </iframe>
    </div>
</div>
<style>
.unity-container-wrapper {
    max-width: 965px;
    margin: auto;
}
.unity-container {
  overflow: hidden;
  padding-top: calc(67.25% + 38px);
  position: relative;
}

.unity-container iframe {
   height: 100%;
   left: 0;
   position: absolute;
   top: 0;
   width: 100%;
}
</style>