.ProseMirror p.is-empty.is-editor-empty:first-child::before {
  color: #adb5bd;
  content: attr(data-placeholder);
  float: left;
  height: 0;
  pointer-events: none;
}

/* Explicitly hide placeholder in all other cases */
.ProseMirror p.is-empty:not(:first-child)::before,
.ProseMirror p:not(.is-editor-empty)::before {
  content: none !important;
}