mseemann/angular2-mdl

.mdl-popover {
  background: #fff;
  border: none;
  display: block;
  visibility: hidden;
  margin: 0;
  overflow: visible;
  padding: 0;
  position: absolute;

  &.is-visible,
  &.is-animating {
    visibility: visible;
    z-index: 999;
  }
}