tiptap/demos/src/Demos/SingleRoomCollab/React/styles.scss

/* Basic editor styles */
.ProseMirror {
  > * + * {
    margin-top: 0.75em;
  }

  ul,
  ol {
    padding: 0 1rem;
  }

  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    line-height: 1.1;
  }

  code {
    background-color: rgba(#616161, 0.1);
    color: #616161;
  }

  pre {
    background: #0d0d0d;
    border-radius: 0.5rem;
    color: #fff;
    font-family: "JetBrainsMono", monospace;
    padding: 0.75rem 1rem;
    
    code {
      background: none;
      color: inherit;
      font-size: 0.8rem;
      padding: 0;
    }
  }

  mark {
    background-color: #faf594;
  }

  img {
    height: auto;
    max-width: 100%;
  }

  hr {
    margin: 1rem 0;
  }

  blockquote {
    border-left: 2px solid rgba(#0d0d0d, 0.1);
    padding-left: 1rem;
  }

  hr {
    border: none;
    border-top: 2px solid rgba(#0d0d0d, 0.1);
    margin: 2rem 0;
  }

  ul[data-type="taskList"] {
    list-style: none;
    padding: 0;

    li {
      align-items: center;
      display: flex;

      > label {
        flex: 0 0 auto;
        margin-right: 0.5rem;
        user-select: none;
      }

      > div {
        flex: 1 1 auto;
      }
    }
  }
}

.editor {
  background-color: #fff;
  border: 3px solid #0d0d0d;
  border-radius: 0.75rem;
  color: #0d0d0d;
  display: flex;
  flex-direction: column;
  max-height: 26rem;

  &__header {
    align-items: center;
    background: #0d0d0d;
    border-bottom: 3px solid #0d0d0d;
    border-top-left-radius: 0.25rem;
    border-top-right-radius: 0.25rem;
    display: flex;
    flex: 0 0 auto;
    flex-wrap: wrap;
    padding: 0.25rem;
  }

  &__content {
    flex: 1 1 auto;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 1.25rem 1rem;
    -webkit-overflow-scrolling: touch;
  }

  &__footer {
    align-items: center;
    border-top: 3px solid #0d0d0d;
    color: #0d0d0d;
    display: flex;
    flex: 0 0 auto;
    font-size: 12px;
    flex-wrap: wrap;
    font-weight: 600;
    justify-content: space-between;
    padding: 0.25rem 0.75rem;
    white-space: nowrap;
  }

  /* Some information about the status */
  &__status {
    align-items: center;
    border-radius: 5px;
    display: flex;

    &::before {
      background: rgba(#0d0d0d, 0.5);
      border-radius: 50%;
      content: " ";
      display: inline-block;
      flex: 0 0 auto;
      height: 0.5rem;
      margin-right: 0.5rem;
      width: 0.5rem;
    }

    &--connecting::before {
      background: #616161;
    }

    &--connected::before {
      background: #b9f18d;
    }
  }

  &__name {
    button {
      background: none;
      border: none;
      border-radius: 0.4rem;
      color: #0d0d0d;
      font: inherit;
      font-size: 12px;
      font-weight: 600;
      padding: 0.25rem 0.5rem;

      &:hover {
        background-color: #0d0d0d;
        color: #fff;
      }
    }
  }
}

/* Give a remote user a caret */
.collaboration-cursor__caret {
  border-left: 1px solid #0d0d0d;
  border-right: 1px solid #0d0d0d;
  margin-left: -1px;
  margin-right: -1px;
  pointer-events: none;
  position: relative;
  word-break: normal;
}

/* Render the username above the caret */
.collaboration-cursor__label {
  border-radius: 3px 3px 3px 0;
  color: #0d0d0d;
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
  left: -1px;
  line-height: normal;
  padding: 0.1rem 0.3rem;
  position: absolute;
  top: -1.4em;
  user-select: none;
  white-space: nowrap;
}