body {
  background: #f9fafb;
  color: #1f2937;
  font-family: system-ui, sans-serif;
  margin: 2em auto;
  max-width: 800px;
  padding: 0 1em;
}

h1 {
  margin-bottom: 0.75rem;
  color: #0f172a;
}

h2 {
  margin-top: 2em;
  color: #555;
}

p {
  margin-top: 0;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

ul {
  padding-left: 1.2rem;
  line-height: 1.8;
}

a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

@keyframes octocat-wave {

  0%,
  100% {
    transform: rotate(0)
  }

  20%,
  60% {
    transform: rotate(-25deg)
  }

  40%,
  80% {
    transform: rotate(10deg)
  }
}

@media (max-width:500px) {
  .github-corner:hover .octo-arm {
    animation: none
  }

  .github-corner .octo-arm {
    animation: octocat-wave 560ms ease-in-out
  }
}