Obsidian custom CSS snippets.

main.css

/* ROOT -------------------------------------------------------------------- */

:root {
  --default-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Microsoft YaHei Light", sans-serif;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
}

/* EDITOR ------------------------------------------------------------------ */

/* Titlebar: Hide it and make window frameless */
.titlebar-button-container {
  display: none;
}
.titlebar,
.titlebar-inner {
  height:  26px !important;
}
.titlebar {
  background: var(--background-secondary-alt);
}
.titlebar-text {
  top:  2px;
  color:  black;
}
.is-frameless .horizontal-main-container {
  background: var(--background-secondary-alt);
  padding-top: 4px;
}
.is-frameless .view-content {
  height: calc(100% - 30px);
}

/* Status bar: Hide it */
.status-bar {
  display: none;
}

/* View header: Clean up */
.is-frameless .workspace-split.mod-root > .workspace-leaf:last-of-type .workspace-leaf-content {
    border-top-right-radius: 0;
}
.is-frameless .workspace-split.mod-root > .workspace-leaf:first-of-type .workspace-leaf-content {
    border-top-left-radius: 0;
}
.is-frameless .view-header {
  height: 30px;
  border-top: 0;
  border-bottom: 0 !important;
}
.is-frameless .view-header-icon {
  padding: 6px 6px;
  top: 0;
}
.is-frameless .view-header-title {
  line-height: 31px;
  font-size: 14px;
}
.is-frameless .view-header-title-container {
  height: 30px;
  line-height: 30px;
  padding-left: 0;
}
.is-frameless .view-actions {
  padding: 2px 10px;
}
.is-frameless .workspace-split.mod-root {
  background-color: transparent;
}

/* SOURCE ------------------------------------------------------------------ */

:root {
  --font-monospace: "JetBrains Mono", Menlo, monospace;
}

.cm-s-obsidian, .cm-s-obsidian * {
  font-size:  0.875rem !important;
  line-height: 1.5rem !important;
  -webkit-font-smoothing: auto;
}

.is-frameless .cm-s-obsidian * {
  font-size:  1rem !important;
  line-height: 2rem !important;
}

.cm-s-obsidian .cm-header, .cm-s-obsidian .cm-strong {
	font-weight: 800;
}

.cm-s-obsidian .cm-hmd-frontmatter,
.cm-s-obsidian .HyperMD-codeblock *,
.cm-s-obsidian .HyperMD-table-row,
.cm-s-obsidian .HyperMD-table-row * {
  font-size:  0.875rem !important;
  line-height:  1.5rem !important;
}

/* Fold: Fix position */
.CodeMirror-gutter-elt {
  top: -5px;
}

/* Code: Normalize */
.cm-s-obsidian span.cm-inline-code,
.cm-s-obsidian pre.HyperMD-codeblock {
  font-size: 1em;
}
.cm-s-obsidian span.cm-inline-code,
.cm-s-obsidian span.cm-inline-code:not(.cm-formatting):not(.cm-hmd-indented-code):not(.obsidian-search-match-highlight) {
    background-color: var(--background-code);
}

/* Footnote: Remove left spacing */
.cm-s-obsidian .HyperMD-footnote {
	padding-left: 5px;
	text-indent: 0;
}

/* Footnote:  Align with baseline */
.cm-s-obsidian span.cm-footref, .cm-s-obsidian span.cm-blockid {
  vertical-align: baseline;
}

/* List: Remove top spacing */
.cm-s-obsidian .HyperMD-list-line {
  padding-top: 0;
}

/* Table code: Fix font */
.cm-s-obsidian .HyperMD-table-row span.cm-inline-code {
  font-size: inherit !important;
}

/* PREVIEW ----------------------------------------------------------------- */

.markdown-preview-view {
  font-size:  0.875rem;
  line-height: 1.5;
}
.is-frameless .markdown-preview-view {
  font-size:  1rem;
}

.markdown-preview-view hr {
  border-width: 1px;
}

.markdown-preview-view strong {
  font-weight: 700;
}

/* Paragraphs */
.markdown-preview-view p {
  margin-block-start: 0;
  margin-block-end: 1em;
}
.markdown-preview-view li p:last-of-type {
  margin-block-end: 0;
}

/* Headings */
.markdown-preview-view h1 {
  margin-top:  0.75em;
  margin-bottom:  1.5rem;
  font-size: 2em;
  line-height: 1.25em;
}
.markdown-preview-view h2 {
  margin-top:  1.125em;
  margin-bottom:  0.75em;
  font-size: 1.3333em;
  line-height: 1.3333em;
}
.markdown-preview-view h3 {
  margin-top:  1.5em;
  margin-bottom:  1em;
  font-size: 1em;
}

/* List */
.markdown-preview-view ul li,
.markdown-preview-view ol li {
  padding-left: 0.375em;
  margin-bottom: 0.375em;
}
.markdown-preview-view ul li:first-of-type,
.markdown-preview-view ol li:first-of-type {
  margin-top: 0.375em;
}

.markdown-preview-view blockquote {
  margin-inline-start: 0;
  margin-inline-end: 0;
  border-radius: 4px;
  border-left-width: 0.375em;
  padding: 0.75em 1.25em 0.75em 0.875em;
}

/* Footnote: Make header footnotes smaller */
.markdown-preview-view h1 .footnote-ref,
.markdown-preview-view h2 .footnote-ref,
.markdown-preview-view h3 .footnote-ref {
  font-size: 0.75em;
}

/* Folding: Make them only appear on hover */
.markdown-preview-view .collapse-indicator {
  opacity: 0;
  line-height: 1.375em;
}
.markdown-preview-view h1 .collapse-indicator {
  line-height: 1.125em;
}
.markdown-preview-view h2 .collapse-indicator {
  line-height: 1.125em;
}
.markdown-preview-view .heading-collapse-indicator {
  position: absolute;
  padding-left: 6px;
  padding-right: 44px;
}
.is-frameless .markdown-preview-view .heading-collapse-indicator {
  padding-left: 14px;
}
.markdown-preview-view .list-collapse-indicator {
  position: absolute;
  margin-left: -48px;
  padding-right: 24px;
  line-height: 1.25em;
}
.markdown-preview-view .is-collapsed .collapse-indicator,
.markdown-preview-view li:hover .collapse-indicator,
.markdown-preview-view h1:hover .collapse-indicator,
.markdown-preview-view h2:hover .collapse-indicator,
.markdown-preview-view h3:hover .collapse-indicator {
  opacity: 1;
}

/* Table */
.markdown-preview-view table, .table-view-table {
  font-size: 0.875em !important;
}
.markdown-preview-view td, .markdown-preview-view th {
  border: 0;
}
.markdown-preview-view th, .table-view-table > thead > tr > th {
  font-size: 0.875em !important;
  font-weight: 600 !important;
  border-bottom: solid 2px var(--text-normal) !important;
}
.markdown-preview-view tr, .table-view-table > tbody > tr {
  border-bottom: 1px solid var(--table-line);
}
.markdown-preview-view th, .markdown-preview-view td {
  text-align:  left;
  vertical-align: top;
}

/* Code */
.markdown-preview-view pre {
  overflow-x: auto;
}
.HyperMD-table-row span.cm-inline-code, pre > code:not(.prism) {
  font-size: 0.875em !important;
}
.theme-light .token.operator {
  background-color: transparent;
}

/* Theme */
.theme-light {
  --table-line: #ddd;
  --text-highlight-bg: rgba(255,228,0,0.3);
  --text-accent: #0d6efd;
  --text-accent-hover: #084298;
}
.theme-dark {
  --table-line: #666;
  --text-highlight-bg:  rgba(255,228,0,0.2);
  --text-accent: #64b5f6;
  --text-accent-hover: #2196f3;
}

/* Kanban: Mobile title height fix */
.kanban-plugin__markdown-preview-view.kanban-plugin__lane-title-text {
  display: block;
  padding: 0;
}