html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: black;
}

canvas {
  position: relative;
  width: 100%;
  height: 100%;
}

* {
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  -webkit-tap-highlight-color: transparent;
}

footer {
  position: fixed;
  right: 0;
  top: 0;
  left: 0;
  padding: 10px 10px;
  text-align: right;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  font-size: 14px;
  color: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  display: inline-block;
  margin-left: 2px;
  padding: 2px 4px;
  color: #343436;
  text-decoration: none;
  background-color: #fcd000;
  border-radius: 4px;
  opacity: 1;
  -webkit-transition: opacity 0.2s;
  transition: opacity 0.2s;
}
a:hover {
  opacity: 0.6;
}