@blocknote/core/src/editor/Block.css

A "Notion-style" block-based extensible text editor built on top of Prosemirror and Tiptap.

/*
BASIC STYLES
*/

.bn-block-outer {
  line-height: 1.5;
  transition: margin 0.2s;
}

/*Ensures blocks & block content spans editor width*/
.bn-block {
  display: flex;
  flex-direction: column;
}

.bn-block-content {
  padding: 3px 0;
  display: flex;
  transition: font-size 0.2s;
  width: 100%;
}

.bn-block-content.ProseMirror-selectednode > *,
/* Case for node view renderers */
.ProseMirror-selectednode > .bn-block-content > * {
  border-radius: 4px;
  outline: 4px solid rgb(100, 160, 255);
}

.bn-block-content::before {
  content: "";
  margin-right: 0;
  transition: all 0.2s;
  /* Workaround for selection issue on Chrome, see #1588 and also here:
  https://discuss.prosemirror.net/t/mouse-down-selection-behaviour-different-on-chrome/8426
  The :before element causes the selection to be set in the wrong place vs 
  other browsers. Setting no height fixes this, while list item indicators are 
  still displayed fine as overflow is not hidden. */
  height: 0;
  overflow: visible;
}

.bn-inline-content {
  width: 100%;
}

/*
NESTED BLOCKS
*/

.bn-block-group .bn-block-group {
  margin-left: 24px;
}

.bn-block-group .bn-block-group > .bn-block-outer {
  position: relative;
}

.bn-block-group
  .bn-block-group
  > .bn-block-outer:not([data-prev-depth-changed])::before {
  content: " ";
  display: inline;
  position: absolute;
  left: -20px;
  height: 100%;
  transition: all 0.2s 0.1s;
}

.bn-block-group
  .bn-block-group
  > .bn-block-outer[data-prev-depth-change="-2"]::before {
  height: 0;
}

.bn-inline-content code {
  font-family: monospace;
}

/* NESTED BLOCK ANIMATIONS (change in indent) */

[data-prev-depth-change="1"] {
  --x: 1;
}
[data-prev-depth-change="2"] {
  --x: 2;
}
[data-prev-depth-change="3"] {
  --x: 3;
}
[data-prev-depth-change="4"] {
  --x: 4;
}
[data-prev-depth-change="5"] {
  --x: 5;
}

[data-prev-depth-change="-1"] {
  --x: -1;
}
[data-prev-depth-change="-2"] {
  --x: -2;
}
[data-prev-depth-change="-3"] {
  --x: -3;
}
[data-prev-depth-change="-4"] {
  --x: -4;
}
[data-prev-depth-change="-5"] {
  --x: -5;
}

.bn-block-outer[data-prev-depth-change] {
  margin-left: calc(10px * var(--x));
}

.bn-block-outer[data-prev-depth-change]
  .bn-block-outer[data-prev-depth-change] {
  margin-left: 0;
}

/* HEADINGS*/
[data-content-type="heading"] {
  --level: 3em;
}
[data-content-type="heading"][data-level="2"] {
  --level: 2em;
}
[data-content-type="heading"][data-level="3"] {
  --level: 1.3em;
}
[data-content-type="heading"][data-level="4"] {
  --level: 1em;
}
[data-content-type="heading"][data-level="5"] {
  --level: 0.9em;
}
[data-content-type="heading"][data-level="6"] {
  --level: 0.8em;
}

[data-prev-level="1"] {
  --prev-level: 3em;
}
[data-prev-level="2"] {
  --prev-level: 2em;
}
[data-prev-level="3"] {
  --prev-level: 1.3em;
}
[data-prev-level="4"] {
  --prev-level: 1em;
}
[data-prev-level="5"] {
  --prev-level: 0.9em;
}
[data-prev-level="6"] {
  --prev-level: 0.8em;
}

.bn-block-outer[data-prev-type="heading"] > .bn-block > .bn-block-content {
  font-size: var(--prev-level);
  font-weight: bold;
}

.bn-block-outer:not([data-prev-type])
  > .bn-block
  > .bn-block-content[data-content-type="heading"],
.bn-block-outer:not([data-prev-type])
  > .bn-block
  > div[data-type="modification"]
  > div[data-type="modification"]
  > .bn-block-content[data-content-type="heading"] {
  font-size: var(--level);
  font-weight: bold;
}

/* QUOTES */
[data-content-type="quote"] blockquote {
  border-left: 2px solid rgb(125, 121, 122);
  color: rgb(125, 121, 122);
  margin: 0;
  padding-left: 1em;
}

/* LISTS */

.bn-block-content::before {
  margin-right: 0;
  content: "";
}

/* Ordered */
.bn-block-content[data-content-type="numberedListItem"]::before {
  display: flex;
  justify-content: center;
  min-width: 24px;
  padding-right: 4px;
}

[data-content-type="numberedListItem"] {
  --index: attr(data-index);
}

[data-prev-type="numberedListItem"] {
  --prev-index: attr(data-prev-index);
}

.bn-block-outer[data-prev-type="numberedListItem"]:not([data-prev-index="none"])
  > .bn-block
  > .bn-block-content::before {
  content: var(--prev-index) ".";
}

.bn-block-outer:not([data-prev-type])
  > .bn-block
  > .bn-block-content[data-content-type="numberedListItem"]::before,
.bn-block-outer:not([data-prev-type])
  > .bn-block
  > div[data-type="modification"]
  > .bn-block-content[data-content-type="numberedListItem"]::before {
  content: var(--index) ".";
}

/* Unordered */
.bn-block-content[data-content-type="bulletListItem"]::before {
  display: flex;
  justify-content: center;
  min-width: 24px;
  padding-right: 4px;
}

/* Checked */
.bn-block-content[data-content-type="checkListItem"] > div {
  display: flex;
  width: 100%;
}

.bn-block-content[data-content-type="checkListItem"] > div > div {
  display: flex;
  justify-content: center;
  min-width: 24px;
  padding-right: 4px;
}

.bn-block-content[data-content-type="checkListItem"] > div > div > input {
  margin: 0;
  cursor: pointer;
}

.bn-block-content[data-content-type="checkListItem"][data-checked="true"]
  .bn-inline-content {
  text-decoration: line-through;
}

.bn-block-content[data-text-alignment="center"] {
  justify-content: center;
}

.bn-block-content[data-text-alignment="right"] {
  justify-content: flex-end;
}

/* Toggle */
.bn-block-content:has(.bn-toggle-wrapper) > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bn-block:has(
    > .bn-block-content > div > .bn-toggle-wrapper[data-show-children="false"]
  )
  > .bn-block-group,
.bn-block:has(
    > .react-renderer
      > .bn-block-content
      > div
      > .bn-toggle-wrapper[data-show-children="false"]
  )
  > .bn-block-group {
  display: none;
}

.bn-toggle-wrapper {
  display: flex;
  align-items: center;
}

.bn-toggle-button {
  color: var(--bn-colors-editor-text);
  padding: 3px;
}

.bn-toggle-button > svg {
  width: 18px;
  height: 18px;
}

.bn-toggle-wrapper[data-show-children="true"] .bn-toggle-button {
  transform: rotate(90deg);
}

.bn-toggle-add-block-button {
  font-size: 16px;
  color: var(--bn-colors-side-menu);
  font-weight: normal;
  margin-left: 22px;
  padding-inline: 2px;
  width: fit-content;
}

.bn-toggle-button,
.bn-toggle-add-block-button {
  background: none;
  border: none;
  border-radius: var(--bn-border-radius-small);
  cursor: pointer;
  display: flex;
  user-select: none;
}

.bn-toggle-button:hover,
.bn-toggle-add-block-button:hover {
  background-color: var(--bn-colors-hovered-background);
}

/* No list nesting */
.bn-block-outer[data-prev-type="bulletListItem"]
  > .bn-block
  > .bn-block-content::before {
  content: "•";
}

.bn-block-outer:not([data-prev-type])
  > .bn-block
  > .bn-block-content[data-content-type="bulletListItem"]::before,
.bn-block-outer:not([data-prev-type])
  > .bn-block
  > div[data-type="modification"]
  > .bn-block-content[data-content-type="bulletListItem"]::before {
  content: "•";
}

/* 1 level of list nesting */
[data-content-type="bulletListItem"]
  ~ .bn-block-group
  > .bn-block-outer[data-prev-type="bulletListItem"]
  > .bn-block
  > .bn-block-content::before {
  content: "◦";
}

[data-content-type="bulletListItem"]
  ~ .bn-block-group
  > .bn-block-outer:not([data-prev-type])
  > .bn-block
  > .bn-block-content[data-content-type="bulletListItem"]::before,
[data-content-type="bulletListItem"]
  ~ .bn-block-group
  > .bn-block-outer:not([data-prev-type])
  > .bn-block
  > div[data-type="modification"]
  > .bn-block-content[data-content-type="bulletListItem"]::before {
  content: "◦";
}

/* 2 levels of list nesting */
[data-content-type="bulletListItem"]
  ~ .bn-block-group
  [data-content-type="bulletListItem"]
  ~ .bn-block-group
  > .bn-block-outer[data-prev-type="bulletListItem"]
  > .bn-block
  > .bn-block-content::before {
  content: "▪";
}

[data-content-type="bulletListItem"]
  ~ .bn-block-group
  [data-content-type="bulletListItem"]
  ~ .bn-block-group
  > .bn-block-outer:not([data-prev-type])
  > .bn-block
  > .bn-block-content[data-content-type="bulletListItem"]::before,
[data-content-type="bulletListItem"]
  ~ .bn-block-group
  [data-content-type="bulletListItem"]
  ~ .bn-block-group
  > .bn-block-outer:not([data-prev-type])
  > .bn-block
  > div[data-type="modification"]
  > .bn-block-content[data-content-type="bulletListItem"]::before {
  content: "▪";
}

/* CODE BLOCKS */
.bn-block-content[data-content-type="codeBlock"] {
  position: relative;

  background-color: rgb(22 22 22);
  color: white;
  border-radius: 8px;
}
.bn-block-content[data-content-type="codeBlock"] > pre {
  white-space: pre;
  overflow-x: auto;
  margin: 0;
  width: 100%;
  tab-size: 2;

  padding: 24px;
}
.bn-block-content[data-content-type="codeBlock"] > div {
  outline: none !important;
}
.bn-block-content[data-content-type="codeBlock"] > div > select {
  outline: none !important;
  appearance: none;
  user-select: none;
  border: none;
  cursor: pointer;
  background-color: transparent;

  position: absolute;
  top: 8px;
  left: 18px;

  font-size: 0.8em;
  color: white;

  opacity: 0;
  transition: opacity 0.3s;
  transition-delay: 1s;
}
.bn-block-content[data-content-type="codeBlock"] > div > select > option {
  color: black;
}
.bn-block-content[data-content-type="codeBlock"]:hover > div > select,
.bn-block-content[data-content-type="codeBlock"] > div > select:focus {
  opacity: 0.5;
  transition-delay: 0.1s;
}

/* PAGE BREAK */
.bn-block-content[data-content-type="pageBreak"] > div {
  width: 100%;
  height: 0;
  border-top: dotted rgb(125, 121, 122) 2px;
  margin-block: 11px;
}

@media print {
  .bn-block-content[data-content-type="pageBreak"] > div {
    page-break-after: always;
  }
}

/* FILES */

/* Element that wraps content for all file blocks */
[data-file-block] .bn-file-block-content-wrapper {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  user-select: none;
}

/* Add block button & default element (name with icon) */
[data-file-block] .bn-file-block-content-wrapper:has(.bn-add-file-button),
[data-file-block] .bn-file-block-content-wrapper:has(.bn-file-name-with-icon) {
  width: 100%;
}

[data-file-block] .bn-add-file-button {
  align-items: center;
  background-color: rgb(242, 241, 238);
  border-radius: 4px;
  color: rgb(125, 121, 122);
  display: flex;
  gap: 10px;
  padding: 12px;
}

.bn-editor[contenteditable="true"] [data-file-block] .bn-add-file-button:hover,
[data-file-block] .bn-file-name-with-icon:hover,
.ProseMirror-selectednode .bn-file-name-with-icon {
  background-color: rgb(225, 225, 225);
}

[data-file-block] .bn-add-file-button-icon,
[data-file-block] .bn-file-icon {
  width: 24px;
  height: 24px;
}

[data-file-block] .bn-add-file-button-text {
  font-size: 0.9rem;
}

[data-file-block] .bn-file-name-with-icon {
  border-radius: 4px;
  display: flex;
  gap: 4px;
  padding: 4px;
}

/* File captions */
[data-file-block] .bn-file-caption {
  font-size: 0.8em;
  padding-block: 4px;
  word-break: break-word;
}

[data-file-block] .bn-file-caption:empty {
  padding-block: 0;
}

/* Resize handles */
[data-file-block] .bn-resize-handle {
  position: absolute;
  width: 8px;
  height: 30px;
  background-color: black;
  border: 1px solid white;
  border-radius: 4px;
  cursor: ew-resize;
}

/* Visual media file blocks, e.g. images & videos */
[data-file-block] .bn-visual-media-wrapper {
  display: flex;
  align-items: center;
  position: relative;
  max-width: 100%;
}

[data-file-block] .bn-visual-media {
  border-radius: 4px;
  width: 100%;
}

/* Block-specific styles */
[data-content-type="audio"] > .bn-file-block-content-wrapper,
.bn-audio {
  width: 100%;
}

/* PLACEHOLDERS*/
.bn-inline-content:has(> .ProseMirror-trailingBreak:only-child):before {
  /*float: left; */
  pointer-events: none;
  height: 0;
  /* width: 0; */
  position: absolute;
  font-style: italic;
}
/* TODO: should this be here? */

/* TEXT COLORS */
[data-text-color="gray"] {
  color: #9b9a97;
}

[data-text-color="brown"] {
  color: #64473a;
}

[data-text-color="red"] {
  color: #e03e3e;
}

[data-text-color="orange"] {
  color: #d9730d;
}

[data-text-color="yellow"] {
  color: #dfab01;
}

[data-text-color="green"] {
  color: #4d6461;
}

[data-text-color="blue"] {
  color: #0b6e99;
}

[data-text-color="purple"] {
  color: #6940a5;
}

[data-text-color="pink"] {
  color: #ad1a72;
}

/* BACKGROUND COLORS */
[data-background-color="gray"] {
  background-color: #ebeced;
}

[data-background-color="brown"] {
  background-color: #e9e5e3;
}

[data-background-color="red"] {
  background-color: #fbe4e4;
}

[data-background-color="orange"] {
  background-color: #f6e9d9;
}

[data-background-color="yellow"] {
  background-color: #fbf3db;
}

[data-background-color="green"] {
  background-color: #ddedea;
}

[data-background-color="blue"] {
  background-color: #ddebf1;
}

[data-background-color="purple"] {
  background-color: #eae4f2;
}

[data-background-color="pink"] {
  background-color: #f4dfeb;
}

/* TEXT ALIGNMENT */
[data-text-alignment="left"] {
  justify-content: flex-start !important;
  text-align: left !important;
}

[data-text-alignment="center"] {
  justify-content: center !important;
  text-align: center !important;
}

[data-text-alignment="right"] {
  justify-content: flex-end !important;
  text-align: right !important;
}

[data-text-alignment="justify"] {
  justify-content: flex-start !important;
  text-align: justify !important;
}

.bn-block-column-list {
  display: flex;
  flex-direction: row;
}

.bn-block-column {
  flex: 1;
  padding: 12px 20px;
  /* scroll if we overflow, for example when tables or images are in the column */
  overflow-x: auto;
}

.bn-block-column:first-child {
  padding-left: 0;
}

.bn-block-column:last-child {
  padding-right: 0;
}

.bn-thread-mark:not([data-orphan="true"]) {
  background: rgba(255, 200, 0, 0.15);
}

.bn-thread-mark .bn-thread-mark-selected {
  background: rgba(255, 200, 0, 0.25);
}