message: changes to flow schema button arrow width
diff: // arrow
  &:after {
  position: absolute;
  - left: 53px;
  + left: 58px;
  top: 62px;
  z-index: 3;
  content: '';
  display: block;
  - width: 34px;
  - height: 28px;
  + width: 24px;
  + height: 20px;
  background: @bg-color-empty;
  box-shadow: 2px -2px 1px 0 rgba(0, 0, 0, 0.1);
  transform: rotate(62.8deg) skewX(35deg);
  