Obsidian CSS Customizations

custom.css

/* set my own variables */
.theme-dark {
  /* ==highlights== */
  --text-highlight-bg: darkorchid;
  /* vertical lines in lists */
  --indentation-guide-color: cyan;
  /* active sidebar item */
  --nav-item-background-active: #e67e00;

  /* don't make code smaller than normal text */
  --code-size: var(--text-size);
}

/* don't flash when a file is opened / gets focus */
.is-flashing {
  transition: none;
  background-color: inherit;
}

/* this only affects editing mode, not preview */
.cm-content {
  font-family: "Inconsolata", monospace;
}

/* padding around highlights */
.cm-s-obsidian span.cm-highlight,
.markdown-preview-view mark {
  padding: 2px;
}

/* inline code */
.markdown-preview-view code {
  color: lightgreen;
}

/* border for big headers */
h1,
h2 {
  border-bottom: 1px solid white;
  font-weight: 600;
}

/* slim down medium headers */
h3,
h4 {
  font-weight: lighter;
}

/* carets for H3s */
h3::before {
  content: "› ";
}

/* little lines for h4 */
h4 {
  text-decoration: dotted underline;
}

/* centered images */
img {
  margin: 0 auto;
  display: block;
}

/* indentation guides */
.markdown-rendered.show-indentation-guide li>ul::before,
.markdown-rendered.show-indentation-guide li>ol::before {
  /* place right in the middle of the bullet in reader mode */
  left: -1.04em;
}

.markdown-source-view.mod-cm6 .cm-indent::before {
  /* center guide in markdown mode */
  /* left: 0.3em; */
}

/* hide indentation guide in code blocks */
.markdown-source-view.mod-cm6 .cm-hmd-codeblock .cm-indent::before {
  display: none;
}

/* remove leading padding in code block editing */
.markdown-source-view.mod-cm6 .cm-line.HyperMD-codeblock {
  padding-left: 0;
}

/* remove leading padding in code block editing within callouts */
.cm-line.HyperMD-quote .cm-indent::before {
  display: none;
}

/* hide "Metadata" header */
.frontmatter-container-header {
  display: none !important;
}

/* format metadata box */
.frontmatter-container {
  /* nice background box */
  background-color: var(--background-secondary-alt);
  /* reduce bottom padding */
  padding: var(--size-4-2) 0 var(--size-4-2) 5px;
  border-radius: 5px;
}

.frontmatter-section {
  /* float off the side a bit */
  margin-left: 5px;
}

/* remove padding on the last element in a callout, which makes it look more even */
.callout-content> :last-child {
  margin-block-end: 0;
}