:root {
  --copy-bg: rgba(0, 0, 0, 0.6);
  --copy-color: rgb(241, 239, 239);
  --copy-hover-bg: rgba(0, 0, 0, 0.2);
  --copy-hover-color: #eee;
}

#cnblogs_post_body pre {
  position: relative;
}

.cnblogs_code,
.cnblogs_Highlighter {
  position: relative;
}

.cnblogs_code .copy-btns,
.cnblogs_Highlighter .copy-btns {
  z-index: 1;
}

pre:hover .copy-btns,
.cnblogs_code:hover .copy-btns,
.cnblogs_Highlighter:hover .copy-btns {
  visibility: visible;
}

.copy-btns {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 2px 8px;
  visibility: hidden;
  color: var(--copy-color) !important;
  font-size: 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}

.copy-btns {
  background-color: var(--copy-bg) !important;
}

.copy-btns:active {
  background: var(--copy-hover-bg);
  color: var(--copy-hover-color);
}

@media screen and (max-width: 768px) {
  .copy-btns {
    display: none;
  }
}