runtimeterror/assets/css/code-copy-button.css

/* adapted from https://aaronluna.dev/blog/add-copy-button-to-code-blocks-hugo-chroma/ */

.highlight {
  position: relative;
  z-index: 0;
  padding: 0;
  margin:40px 0 10px 0;
  border-radius: 4px;
}

.copy-code-button {
  position: absolute;
  z-index: -1;
  right: 0px;
  top: -26px;
  font-size: 13px;
  font-weight: 700;
  line-height: 14px;
  letter-spacing: 0.5px;
  width: 65px;
  color: var(--fg);
  background-color: var(--bg);
  border: 1.25px solid var(--off-bg);
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  border-bottom-right-radius: 0px;
  border-bottom-left-radius: 0px;
  white-space: nowrap;
  padding: 6px 6px 7px 6px;
  margin: 0 0 0 1px;
  cursor: pointer;
  opacity: 0.6;
}

.copy-code-button:hover,
.copy-code-button:focus,
.copy-code-button:active,
.copy-code-button:active:hover {
  color: var(--off-bg);
  background-color: var(--off-fg);
  opacity: 0.8;
}

.copyable-text-area {
  position: absolute;
  height: 0;
  z-index: -1;
  opacity: .01;
}

.torchlight [data-lang]:before {
  position: absolute;
  z-index: -1;
  top: -26px;
  left: 0px;
  content: attr(data-lang);
  font-size: 13px;
  font-weight: 700;
  color: var(--fg);
  background-color: var(--bg);
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  padding: 6px 6px 7px 6px;
  line-height: 14px;
  opacity: 0.6;
  position: absolute;
  letter-spacing: 0.5px;
  border: 1.25px solid var(--off-bg);
  margin: 0 0 0 1px;
}