html5/render/browser/extend/components/slider/slider.css

.slider {
  position: relative;
}

.slider .indicator-container {
  position: absolute;
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-align: center;
  box-align: center;
  -webkit-align-items: center;
  align-items: center;
  -webkit-box-pack: center;
  box-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  font-size: 0;
}
.slider .indicator-container .indicator {
  border-radius: 50%;
}
.slider .indicator-container.row {
  -webkit-box-orient: horizontal;
  box-orient: horizontal;
  -webkit-flex-direction: row;
  flex-direction: row;
}
.slider .indicator-container.column {
  -webkit-box-orient: vertical;
  box-orient: vertical;
  -webkit-flex-direction: column;
  flex-direction: column;
}