@kangc/v-md-editor/lib/plugins/copy-code/copy-code.css

A markdown editor built on Vue

.v-md-pre-wrapper.copy-code-mode .v-md-copy-code-btn {
  position: absolute;
  top: 0.4em;
  right: 0.4em;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 24px;
  padding: 0;
  color: #ddd;
  font-size: 14px;
  background-color: #666;
  border: none;
  border-radius: 6px;
  outline: none;
  box-shadow: 0 2px 0 0 rgba(0, 0, 0, 0.2);
  visibility: hidden;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
  user-select: none;
}

.v-md-pre-wrapper.copy-code-mode .v-md-copy-code-btn i {
  display: inline-block;
  color: inherit;
  font-style: normal;
  line-height: 0;
  text-align: center;
  text-transform: none;
  vertical-align: -0.125em;
  text-rendering: optimizeLegibility;
  pointer-events: none;
}

.v-md-pre-wrapper.copy-code-mode::before {
  transition: 0.3s;
}

.v-md-pre-wrapper.copy-code-mode:hover .v-md-copy-code-btn {
  visibility: visible;
  opacity: 1;
}

.v-md-pre-wrapper.copy-code-mode:hover::before {
  display: none;
}