div.work-ChevronButton {
  box-shadow: none;
  width: 16px;
  height: 16px;
  display: inline-block;
  margin: 0 6px;
  cursor: pointer;
}

div.work-ChevronButton .ms-Icon {
  font-size: 12px;
  height: 16px;
  line-height: 16px;
  padding: 0;
  -webkit-transform-origin: 50% 50%;
  -webkit-transition: -webkit-transform .1s linear;
  transition: -webkit-transform .1s linear;
  transform-origin: 50% 50%;
  transition: transform .1s linear;
  transition: transform .1s linear,-webkit-transform .1s linear;
  vertical-align: bottom;
}

div.work-ChevronButton.is-collapsed .ms-Icon {
  -webkit-transform: rotate(-90deg);
  transform: rotate(-90deg);
}