FixIt/assets/scss/widgets/third-party/_github-corner.scss

@keyframes octocat-wave {
  0%,
  100% {
    transform: rotate(0);
  }
  20%,
  60% {
    transform: rotate(-25deg);
  }
  40%,
  80% {
    transform: rotate(10deg);
  }
}

.github-corner {
  position: fixed;
  top: 0;
  @include z-index(fixed);

  :hover .octo-arm {
    animation: octocat-wave 560ms ease-in-out;
  }

  svg {
    width: fi-var(header-height);
    height: fi-var(header-height);
    border: 0;
    color: fi-var(github-corner-color);
    fill: fi-var(github-corner-fill);
  }

  &.left {
    left: 0;

    svg {
      transform: scale(-1, 1);
    }
  }

  &.right {
    right: 0;
  }

  @include media('print') {
    display: none !important;
  }
}