:root {
  --color-green: rgb(0, 255, 0);
}

* {
  box-sizing: border-box;
}

html, body {
  display: flex;
  margin: 0;
  padding: 0;
  border: none;
  max-height: 100vh;
  height: 100%;
}

body {
  font-family: monospace;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

dialog {
  top: 0;
  padding: 1.6rem 2rem;
  width: 100%;
  max-width: 480px;
  border: 0.3rem solid var(--color-green) !important;
  background-color: black;
  color: var(--color-green);
}

dialog h1 {
  margin: 0 0 1rem;
  font-size: 2.5rem;
}

dialog h2 {
  margin: 0;
  font-size: 1.5rem;
}

dialog dl {
  margin-bottom: 2rem;
}

dialog dt {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
}

dialog dd {
  margin: 0 0 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
}

dialog footer {
  display: flex;
  width: 100%;
  justify-content: flex-end;
}

dialog button {
  appearance: none;
  font-size: 1rem;
  font-weight: 600;
  height: 3rem;
  line-height: 2rem;
  padding: 0 1.8rem;
  border: 0.2rem solid var(--color-green);
  background-color: black;
  color: var(--color-green);
  box-shadow: .2rem .2rem 0 .2rem black, .4rem .4rem 0 .2rem var(--color-green);
}

dialog button:hover,
dialog button:active {
  background-color: var(--color-green);
  color: black;
}