discourse/app/assets/stylesheets/common/d-editor.scss

.d-editor-container {
  display: flex;
  flex-grow: 1;
  max-width: 100%;
}

.d-editor-overlay {
  position: absolute;
  background-color: black;
  opacity: 0.8;
  z-index: z("modal","overlay");
}

.d-editor-modals {
  position: absolute;
  z-index: z("modal","content");
}

.d-editor {
  display: flex;
  flex-grow: 1;
  min-height: 0;
}

.d-editor .d-editor-modal {
  min-width: 400px;
  @media screen and (max-width: 424px) {
    min-width: 300px;
  }
  position: absolute;
  background-color: $secondary;
  border: 1px solid $primary-low;
  padding: 1em;
  top: 25px;

  input {
    width: 95%;
  }
  h3 {
    margin-bottom: 0.5em;
  }
}

.d-editor-textarea-wrapper,
.d-editor-preview-wrapper {
  flex: 1;
}

.d-editor-textarea-wrapper {
  display: flex;
  flex-direction: column;
  background-color: $secondary;
  position: relative;
  border: 1px solid $primary-medium;
  
  textarea {
    background: transparent;
  }

}

.d-editor-preview-wrapper {
  max-width: 49%;
  margin-left: 1%;
  display: flex;
  flex-direction: column;
}

.d-editor-button-bar {
  display: flex;
  align-items: center;
  border-bottom: none;
  min-height: 30px;
  padding-left: 3px;
  border-bottom: 1px solid $primary-low;
  
  button {
    background-color: transparent;
    color: $primary-high;
  }

  .btn:not(.no-text) {
    font-size: $font-up-1;
  }

  .btn.bold {
    font-weight: bolder;
  }

  .btn.italic {
    font-style: italic;
  }
}

.d-editor-spacer {
  width: 1px;
  height: 20px;
  margin: 0 5px;
  background-color: $primary-low;
  display: inline-block;
}

.d-editor-preview-wrapper {
  overflow: auto;
  cursor: default;
}

.d-editor-input,
.d-editor-preview {
  box-sizing: border-box;
  flex: 1 1 100%;  
  width: 100%;  
  margin: 0;
  min-height: auto;
  word-wrap: break-word;
  -webkit-appearance: none;
  border-radius: 0;  
  &:focus {
    box-shadow: none;
    border: 0;
    outline: 0;
  }
}

.d-editor-input {
  border: 0;
  padding: 10px;
  height: 100%;
  overflow-x: hidden;
  resize: none; 
}

.d-editor-preview {
  height: auto;
}

.d-editor-plugin {
  display: flex;
  flex: 1 1;
  overflow: auto;
}

.composing-whisper .d-editor-preview {
  font-style: italic;
  color: $primary-medium !important;
}

.d-editor-preview > *:first-child {
  margin-top: 0;
}

.hide-preview .d-editor-preview-wrapper {
  display: none;
  flex: 0;
}

.user-preferences .bio-composer,
.edit-category-tab-topic-template {
  textarea {
    width: 100%;
  }
  .d-editor-container {
    display: block;
  }
  .d-editor-textarea-wrapper {
    border: 1px solid $primary-low;
  }
  .d-editor-button-bar .btn {
    padding: 6px 8px;
  }
  .d-editor-preview-wrapper {
    max-width: 100%;
    margin: 10px 0 0 0;
  }
  .d-editor-preview {
    background-color: $primary-very-low;
    padding: 5px;
  }
}

.user-preferences .bio-composer {
  padding: 10px;
  border: 1px solid $primary-low;
}