html,
body {
  width: 100%;
  height: 100%;
  margin: 0px;
  padding: 0px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: "Courier New", Courier, monospace;
}

html {
  flex-direction: column;
}

body {
  flex-direction: row;
  overflow: hidden;
  touch-action: none;
  background: black;
}

canvas {
  margin: auto;
  display: block;
}

* {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

.textToHide {
  -moz-animation: hideAnimation 500ms ease-in-out 4s;
  -webkit-animation: hideAnimation 500ms ease-in-out 4s;
  -o-animation: hideAnimation 500ms ease-in-out 4s;
  animation: hideAnimation 500ms ease-in-out 4s;
  -webkit-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
}
@keyframes hideAnimation {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}
@-webkit-keyframes hideAnimation {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}