message: fix horizontal scroll
diff: @@ -212,7 +212,7 @@ Indicator.prototype._calculate = function () {
  this.sizeRatioY = this.maxPosY / this.scroller.maxScrollY
  } else {
  let wrapperWidth = this.wrapper.clientWidth
  - this.indicatorWidth = Math.max(Math.round(wrapperWidth * wrapperWidth / (this.scroller.scrollerHeight || wrapperWidth || 1)), INDICATOR_MIN_LEN)
  + this.indicatorWidth = Math.max(Math.round(wrapperWidth * wrapperWidth / (this.scroller.scrollerWidth || wrapperWidth || 1)), INDICATOR_MIN_LEN)
  this.indicatorStyle.width = `${this.indicatorWidth}px`
  this.maxPosX = wrapperWidth - this.indicatorWidth
  