gitea/web_src/css/editor/combomarkdowneditor.css

.combo-markdown-editor {
  width: 100%;
}

.combo-markdown-editor markdown-toolbar {
  cursor: default;
  display: flex;
  align-items: center;
  padding-bottom: 10px;
  flex-wrap: wrap;
}

.combo-markdown-editor .markdown-toolbar-group {
  display: flex;
  border-left: 1px solid var(--color-secondary);
  padding: 0 0.5em;
}

.combo-markdown-editor .markdown-toolbar-group:first-child {
  border-left: 0;
  padding-left: 0;
}
.combo-markdown-editor .markdown-toolbar-group:last-child {
  flex: 1;
  justify-content: flex-end;
  border-right: none;
  border-left: 0;
  padding-right: 0;
}

.combo-markdown-editor .markdown-toolbar-button {
  border: none;
  background: none;
  user-select: none;
  padding: 5px;
  cursor: pointer;
  color: var(--color-text);
}

.combo-markdown-editor .markdown-toolbar-button:hover {
  color: var(--color-primary);
}

.combo-markdown-editor md-header {
  position: relative;
}
.combo-markdown-editor md-header::after {
  font-size: 10px;
  position: absolute;
  top: 7px;
}
.combo-markdown-editor md-header[level="1"]::after {
  content: "1";
}
.combo-markdown-editor md-header[level="2"]::after {
  content: "2";
}
.combo-markdown-editor md-header[level="3"]::after {
  content: "3";
}

.ui.form .combo-markdown-editor textarea.markdown-text-editor,
.combo-markdown-editor textarea.markdown-text-editor {
  display: block;
  width: 100%;
  max-height: calc(100vh - var(--min-height-textarea));
  resize: vertical;
}

.combo-markdown-editor .CodeMirror-scroll {
  max-height: calc(100vh - var(--min-height-textarea));
}

/* use the same styles as markup/content.css */
.combo-markdown-editor .CodeMirror-scroll .cm-header-1 {
  font-size: 2em;
}

.combo-markdown-editor .CodeMirror-scroll .cm-header-2 {
  font-size: 1.5em;
}

.combo-markdown-editor .CodeMirror-scroll .cm-header-3 {
  font-size: 1.25em;
}

.combo-markdown-editor .CodeMirror-scroll .cm-header-4 {
  font-size: 1em;
}

.combo-markdown-editor .CodeMirror-scroll .cm-header-5 {
  font-size: 0.875em;
}

.combo-markdown-editor .CodeMirror-scroll .cm-header-6 {
  font-size: 0.85em;
}

.combo-markdown-editor .ui.tab.markup[data-tab-panel="markdown-previewer"] {
  border-bottom: 1px solid var(--color-secondary);
  padding-bottom: 1rem;
}