.material-popup-box-shadow() {
  -webkit-box-shadow: @MATERIAL_POPUP_SHADOW_H @MATERIAL_POPUP_SHADOW_V @MATERIAL_POPUP_SHADOW_BLUR @MATERIAL_POPUP_SHADOW_SPREAD @MATERIAL_POPUP_SHADOW_COLOR;
  -moz-box-shadow: @MATERIAL_POPUP_SHADOW_H @MATERIAL_POPUP_SHADOW_V @MATERIAL_POPUP_SHADOW_BLUR @MATERIAL_POPUP_SHADOW_SPREAD @MATERIAL_POPUP_SHADOW_COLOR;
  box-shadow: @MATERIAL_POPUP_SHADOW_H @MATERIAL_POPUP_SHADOW_V @MATERIAL_POPUP_SHADOW_BLUR @MATERIAL_POPUP_SHADOW_SPREAD @MATERIAL_POPUP_SHADOW_COLOR;
}