* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px;
  line-height: 1.8;
  color: #000;
  background: #fff;
}

ul {
  list-style: none;
}

@media (max-width: 640px) {
  ul {
    padding: 0 16px;
  }
}

li {
  opacity: 0.65;
  transition: opacity 0.2s;
}

li:hover {
  opacity: 1;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

a:hover {
  border-bottom-color: currentColor;
}