VSCodeのMarkdown用css

md_styles.css

/* CSS for Markdown */

h1 {
  padding: 5px 7px;
  border-left: solid 7px;
  background-color: var(--base2);
}

h2 {
  padding: 5px 7px;
  border-left: solid 7px #00000020;
}

h3 {
  border-bottom: solid 3px #00000010;
  position: relative;
}

h3:after {
  position: absolute;
  content: " ";
  display: block;
  border-bottom: solid 3px #00000010;
  bottom: -3px;
  width: 20%;
}

h1, h2, h3, h4, h5, h6 { font-weight: bold; }

h1 tt, h1 code { font-size: inherit; }
h2 tt, h2 code { font-size: inherit; }
h3 tt, h3 code { font-size: inherit; }
h4 tt, h4 code { font-size: inherit; }
h5 tt, h5 code { font-size: inherit; }
h6 tt, h6 code { font-size: inherit; }

h1 { font-size: 28px; }
h3 { font-size: 18px; }
h4 { font-size: 16px; }
h5 { font-size: 14px; }
h6 { font-size: 14px; }