styles.css

.obsidian-embedded-code-title__code-block-title {
    position: absolute !important;
    top: 0;
    left: 0;
    width: 100%;
    /* font-size: 85%!important; */
    padding: 3px !important;
    padding-left: 15px !important;
    margin: 0 !important;
    border-radius: 0 !important;
}

.copy-code-button{
  margin-top: 42px !important; /* 为自带的按钮增加上边距 */
}


pre[class*=language-] {
  font-size: var(--editor-font-size);
  line-height: 1.5em;
  padding-bottom: 0px;
}
.obsidian-embedded-code-title__code-block-title + code[class*=language-]{
  padding: 0em 0em 0em 0em !important;
  /* padding-top: 0 !important; */
  font-size: var(--editor-font-size) !important;
  line-height: 1.5em !important;
}
/* pre[class*=language-] > code[class*=language-] {
  padding: 0em 0em 0em 0.5em !important;
  /* padding-top: 0 !important; */
  /* font-size: var(--editor-font-size) !important;
  line-height: 1.5em !important;
} */

pre[class*=language-].code-block-pre__has-linenum {
  padding-left: 3.5em;
}

.code-block-pre__has-linenum::before {
  padding-top: 6px;
}

/* 代码行号 */
.code-block-linenum-wrap {
  position: absolute;
  /* top: 35px; */
  left: 0px;
  min-width: 3em;
  font-size: var(--editor-font-size);
  line-height: 1.5em;
  counter-reset: line-num;
  text-align: center;
  /* border-right: #999 2px solid; 行号与代码间分隔线 */ 
  user-select: none;
  pointer-events: none;
  background-color: transparent;
  /* background-color: inherit; */
}
.code-block-linenum-wrap .code-block-linenum {
  display: block;
  counter-increment: line-num;
  pointer-events: none;
}
.code-block-linenum-wrap .code-block-linenum::before {
  content: counter(line-num);
}

/* 代码高亮 */
pre[class*=language-] .code-block-highlight-wrap {
  margin: 0;
  padding: 0;
  position: absolute;
  left: 0px;
  top: 35px;
  width: 100%;
  height: 100%;
  background-color: transparent;
  pointer-events: none;
}

pre[class*=language-] .code-block-highlight-wrap span {
  display: block;
  height: 1.5em;
  width: 100%;
}

/* 折叠代码块 */

:root {
  --admonition-details-icon: url("data:image/svg+xml;charset=utf-8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z'/></svg>");
}
.obsidian-embedded-code-title__code-block-title{
  line-height: 35px;
  height: 35px !important;
  color: currentColor !important;
}

.obsidian-embedded-code-title__code-block-title .langName {
  display: inline;
  float: right;
  line-height: 29px;
  margin-right: 35px;
  font-weight: bold;
  font-size: 14px;
  font-family: var(--font-default);
}

.obsidian-embedded-code-title__code-block-title .collapser {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  content: "";
}
.obsidian-embedded-code-title__code-block-title .collapser .handle {
  transform: rotate(90deg);
  transition: transform 0.25s;
  background-color: currentColor;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-image: var(--admonition-details-icon);
  mask-image: var(--admonition-details-icon);
  width: 20px;
  height: 20px;
}
.obsidian-embedded-code-title__code-block-title[closed] .collapser .handle{
  transform: rotate(0deg);
}
.obsidian-embedded-code-title__code-block-title[closed] + code{
  height: 0;
}
.obsidian-embedded-code-title__code-block-title[closed] + code + span{
  height: 0;
}

.obsidian-embedded-code-title__code-block-title[closed] + code + span span{
  visibility: hidden;
}

.obsidian-embedded-code-title__code-block-title[closed] + code + span + span span{
  visibility: hidden;
}

.obsidian-embedded-code-title__code-block-title > .title {
  display: inline-block;
  position: relative;
  margin-left: 5px !important;
  margin: 0;
  padding: 0;

  top: 50%;
  transform: translateY(-50%);
}

/* .obsidian-embedded-code-title__code-block-title > .icon-wrap {
  display: inline-block;
  position: relative;
  width: 20px;
  height: 20px;
  background-position: center;

  top: 50%;
  transform: translateY(-50%);
} */

.code-block-wrap > pre > code[class*=language-]{
  padding: 0em 0em 0em 0em !important;
  /* padding-top: 0 !important; */
  font-size: var(--editor-font-size) !important;
  line-height: 1.5em !important;
}