.reveal pre, .codeblock {
  width: 100%;
}

.codeblock {
  margin: 20px auto;
  position: relative;
}

.codeblock pre {
  margin: 0;
  width: 100%;
  font-size: 1.5rem;
}

.codeblock > button {
  --copy-bg: orange;
  --copied-bg: green;
  --copy-color: black;
  --copied-color: white;
  opacity: 0.5;
  z-index: 1;
  display: block;
  position: absolute;
  right: 0;
  top: 0;
  background-color: var(--copy-bg);
  color: var(--copy-color);
  border: 0;
  margin: 0;
  padding: 0.2em 0.5em;
  font-family: inherit;
  font-size: 1.5rem;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transform: translate3d(0, 0, 0);
          transform: translate3d(0, 0, 0);
  -webkit-transition: background-color 0.25s ease-in-out, opacity 0.25s ease-in-out;
  -o-transition: background-color 0.25s ease-in-out, opacity 0.25s ease-in-out;
  transition: background-color 0.25s ease-in-out, opacity 0.25s ease-in-out;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: pointer;
}

.codeblock > button:hover, pre > button:hover {
  opacity: 1;
}

.codeblock > button[disabled] {
  opacity: 1;
  background-color: var(--copied-bg);
  color: var(--copied-color);
  cursor: default;
}

.codeblock > button:focus {
  outline: 0;
}