:root {
  --blue: #024CAA;
  --gray: #E8E8E8;
}

/* メイン部分 */
.markdown-body {
  font-size: 16px;
  line-height: 1.5;
  padding: 1em;
  word-wrap: break-word;
  word-break: break-word;
}

/* 見出し */
.markdown-body h1 {
  position: relative;
  padding-bottom: 0.3em;
  font-size: 2em;
}

.markdown-body h1::after {
  position: absolute;
  content: '';
  bottom: 0;
  left: 0;
  width: 90%;
  height: 2px;
  background-color: var(--blue);
}

.markdown-body h2 {
  position: relative;
  padding-bottom: 0.3em;
}

.markdown-body h2::after {
  position: absolute;
  content: '';
  bottom: 0;
  left: 0;
  width: 75%;
  height: 2px;
  background-color: var(--blue);
}

.markdown-body h3 {
  font-size: 1.25em;
}

/* リスト */
.markdown-body ul,
.markdown-body ol {
  padding-left: 2em;
}

/* 引用 */
.markdown-body blockquote {
  padding: 0 1em;
  border-left: 0.25em solid Tomato;
  background-color: var(--gray);
}

/* 横線 */
.markdown-body hr {
  height: 0.25em;
  padding: 0;
  margin: 24px 0;
  background-color: var(--blue);
  border: 0;
}

/* 埋め込み画像 */
.markdown-body img {
  max-width: 100%;
  box-sizing: content-box;
  background-color: var(--gray);
}

/* コードブロック */
.markdown-body code,
.markdown-body pre:has(code) {
  padding: 0.2em 0.4em;
  white-space: nowrap;
  background-color: var(--gray);
  border-radius: 6px;
}

.markdown-body pre:has(code) {
  overflow-x: auto;
}

/* 段落 */
.markdown-body p,
.markdown-body blockquote,
.markdown-body ul,
.markdown-body ol,
.markdown-body dl,
.markdown-body table,
.markdown-body pre,
.markdown-body details {
  margin-top: 0;
  margin-bottom: 8px;
}

.markdown-body table {
  border-collapse: collapse;
  border-spacing: 0;
}

.markdown-body table th,
.markdown-body table td {
  padding: 6px 13px;
  border: 2px solid var(--gray);
}