www.cialloo.com/src/editor/styles/editor.css

.editor-container {
  margin: 20px auto;
  border-radius: 8px;
  max-width: 1100px;
  color: #000;
  position: relative;
  line-height: 1.7;
  font-weight: 400;
  text-align: left;
  border: 1px solid #e0e0e0;
  background: #fff;
}

.editor-inner {
  background: #fff;
  position: relative;
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
}

.editor-input {
  min-height: 300px;
  resize: vertical;
  font-size: 15px;
  caret-color: rgb(5, 5, 5);
  position: relative;
  tab-size: 1;
  outline: 0;
  padding: 15px 20px;
  caret-color: #444;
}

.editor-placeholder {
  color: #999;
  overflow: hidden;
  position: absolute;
  text-overflow: ellipsis;
  top: 15px;
  left: 20px;
  font-size: 15px;
  user-select: none;
  display: inline-block;
  pointer-events: none;
}

.editor-paragraph {
  margin: 0;
  margin-bottom: 8px;
  position: relative;
}

.editor-paragraph:last-child {
  margin-bottom: 0;
}

.editor-heading-h1 {
  font-size: 2em;
  font-weight: 700;
  margin: 0;
  margin-bottom: 12px;
  padding: 0;
}

.editor-heading-h2 {
  font-size: 1.5em;
  font-weight: 700;
  margin: 0;
  margin-bottom: 10px;
  padding: 0;
}

.editor-heading-h3 {
  font-size: 1.25em;
  font-weight: 700;
  margin: 0;
  margin-bottom: 8px;
  padding: 0;
}

.editor-quote {
  margin: 0;
  margin-left: 20px;
  margin-bottom: 10px;
  font-size: 15px;
  color: #666;
  border-left: 4px solid #ccc;
  padding-left: 16px;
}

.editor-code {
  background-color: #f4f4f4;
  font-family: Menlo, Consolas, Monaco, monospace;
  display: block;
  padding: 8px 12px;
  line-height: 1.53;
  font-size: 13px;
  margin: 0;
  margin-top: 8px;
  margin-bottom: 8px;
  overflow-x: auto;
  position: relative;
  tab-size: 2;
  border-radius: 4px;
}

.editor-text-bold {
  font-weight: bold;
}

.editor-text-italic {
  font-style: italic;
}

.editor-text-underline {
  text-decoration: underline;
}

.editor-text-strikethrough {
  text-decoration: line-through;
}

.editor-text-code {
  background-color: #f4f4f4;
  padding: 1px 4px;
  font-family: Menlo, Consolas, Monaco, monospace;
  font-size: 90%;
  border-radius: 3px;
}

.editor-list-ol {
  padding: 0;
  margin: 0;
  margin-left: 20px;
}

.editor-list-ul {
  padding: 0;
  margin: 0;
  margin-left: 20px;
}

.editor-listitem {
  margin: 4px 0;
}

.editor-nested-listitem {
  list-style-type: none;
}

/* Horizontal Rule */
.editor-hr {
  border: none;
  border-top: 2px solid #ccc;
  margin: 15px 0;
}

/* Link */
.editor-link {
  color: #0066cc;
  text-decoration: none;
  cursor: pointer;
}

.editor-link:hover {
  text-decoration: underline;
}

/* Table */
.editor-table {
  border-collapse: collapse;
  border-spacing: 0;
  overflow-y: scroll;
  overflow-x: scroll;
  table-layout: fixed;
  width: max-content;
  margin: 15px 0;
}

.editor-table-cell {
  border: 1px solid #ccc;
  min-width: 75px;
  vertical-align: top;
  text-align: start;
  padding: 6px 8px;
  position: relative;
  outline: none;
}

.editor-table-cell-header {
  background-color: #f4f4f4;
  font-weight: bold;
  text-align: left;
}

/* Checklist */
.editor-listitem-checked,
.editor-listitem-unchecked {
  position: relative;
  margin-left: 8px;
  margin-right: 8px;
  padding-left: 24px;
  padding-right: 24px;
  list-style-type: none;
  outline: none;
}

.editor-listitem-checked {
  text-decoration: line-through;
}

.editor-listitem-unchecked:before,
.editor-listitem-checked:before {
  content: '';
  width: 16px;
  height: 16px;
  top: 2px;
  left: 0;
  cursor: pointer;
  display: block;
  background-size: cover;
  position: absolute;
}

.editor-listitem-unchecked:before {
  border: 1px solid #999;
  border-radius: 2px;
}

.editor-listitem-checked:before {
  border: 1px solid #0066cc;
  border-radius: 2px;
  background-color: #0066cc;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='white' d='M13.5 2l-7.5 7.5-3.5-3.5-1.5 1.5 5 5 9-9z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.editor-listitem-checked[dir='rtl']:before,
.editor-listitem-unchecked[dir='rtl']:before {
  left: auto;
  right: 0;
}

.editor-listitem-checked[dir='rtl'],
.editor-listitem-unchecked[dir='rtl'] {
  padding-left: 24px;
  padding-right: 24px;
}

/* Image */
.editor-image {
  cursor: default;
  display: inline-block;
  position: relative;
  user-select: none;
}

.editor-image img {
  max-width: 100%;
  cursor: default;
}

.editor-image img.focused {
  outline: 2px solid rgb(60, 132, 244);
  user-select: none;
}

.editor-image img.focused.draggable {
  cursor: grab;
}

.editor-image img.focused.draggable:active {
  cursor: grabbing;
}

.image-control-wrapper--resizing {
  touch-action: none;
}

/* Image Resizer */
.image-resizer {
  display: block;
  width: 7px;
  height: 7px;
  position: absolute;
  background-color: rgb(60, 132, 244);
  border: 1px solid #fff;
}

.image-resizer.image-resizer-n {
  top: -6px;
  left: 48%;
  cursor: n-resize;
}

.image-resizer.image-resizer-ne {
  top: -6px;
  right: -6px;
  cursor: ne-resize;
}

.image-resizer.image-resizer-e {
  bottom: 48%;
  right: -6px;
  cursor: e-resize;
}

.image-resizer.image-resizer-se {
  bottom: -2px;
  right: -6px;
  cursor: nwse-resize;
}

.image-resizer.image-resizer-s {
  bottom: -2px;
  left: 48%;
  cursor: s-resize;
}

.image-resizer.image-resizer-sw {
  bottom: -2px;
  left: -6px;
  cursor: sw-resize;
}

.image-resizer.image-resizer-w {
  bottom: 48%;
  left: -6px;
  cursor: w-resize;
}

.image-resizer.image-resizer-nw {
  top: -6px;
  left: -6px;
  cursor: nw-resize;
}

/* Text Alignment */
.editor-text-left {
  text-align: left;
}

.editor-text-center {
  text-align: center;
}

.editor-text-right {
  text-align: right;
}

.editor-text-justify {
  text-align: justify;
}

/* Hashtag styles */
.editor-hashtag {
  background-color: rgba(88, 144, 255, 0.15);
  border-bottom: 1px solid rgba(88, 144, 255, 0.3);
  font-weight: 500;
}

/* Mention styles */
.mention {
  background-color: rgba(24, 119, 232, 0.2);
  color: #1877e8;
  border-radius: 4px;
  padding: 1px 3px;
  font-weight: 500;
  cursor: pointer;
}

.mention:focus {
  box-shadow: rgb(180 213 255) 0px 0px 0px 2px;
  outline: none;
}

/* Typeahead popover styles */
.typeahead-popover {
  background: #fff;
  box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  position: relative;
  z-index: 5;
}

.typeahead-popover ul {
  padding: 0;
  list-style: none;
  margin: 0;
  border-radius: 8px;
  max-height: 200px;
  overflow-y: scroll;
}

.typeahead-popover ul::-webkit-scrollbar {
  display: none;
}

.typeahead-popover ul {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.typeahead-popover ul li {
  margin: 0;
  min-width: 180px;
  font-size: 14px;
  outline: none;
  cursor: pointer;
  border-radius: 8px;
}

.typeahead-popover ul li.selected {
  background: #eee;
}

.typeahead-popover li {
  margin: 0 8px 0 8px;
  padding: 8px;
  color: #050505;
  cursor: pointer;
  line-height: 16px;
  font-size: 15px;
  display: flex;
  align-content: center;
  flex-direction: row;
  flex-shrink: 0;
  background-color: #fff;
  border-radius: 8px;
  border: 0;
}

.typeahead-popover li.active {
  display: flex;
  width: 20px;
  height: 20px;
  background-size: contain;
}

.typeahead-popover li:first-child {
  border-radius: 8px 8px 0px 0px;
}

.typeahead-popover li:last-child {
  border-radius: 0px 0px 8px 8px;
}

.typeahead-popover li:hover {
  background-color: #eee;
}

.typeahead-popover li .text {
  display: flex;
  line-height: 20px;
  flex-grow: 1;
  min-width: 150px;
}

.typeahead-popover li .icon {
  display: flex;
  width: 20px;
  height: 20px;
  user-select: none;
  margin-right: 8px;
  line-height: 16px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.mentions-menu {
  width: 250px;
}

.typeahead-popover li .icon.user {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23666'%3E%3Cpath d='M12 12c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm0 2c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z'/%3E%3C/svg%3E");
}