tu-view-plus/lib/src/input-number/style/input-number.css

.tu-input-number {
  position: relative;
  display: inline-flex;
  width: 100%;
  box-sizing: border-box;
  vertical-align: middle;
  height: 32px;
  line-height: 32px;
}
.tu-input-number__decrease, .tu-input-number__increase {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  z-index: 1;
  top: 1px;
  bottom: 1px;
  width: 32px;
  height: 100%;
  font-size: var(--tu-font-size-medium, 14px);
  color: var(--tu-color-text-placeholder, #9b9fa8);
  cursor: pointer;
  transition: color var(--tu-transition-duration-2, 0.2s);
}
.tu-input-number__decrease > .tu-icon, .tu-input-number__increase > .tu-icon {
  font-size: var(--tu-font-size-medium, 14px);
}
.tu-input-number__decrease.is-disabled, .tu-input-number__increase.is-disabled {
  cursor: not-allowed;
  color: var(--tu-color-text-placeholder, #9b9fa8);
}

.tu-input-number__decrease:hover:not(.is-disabled), .tu-input-number__increase:hover:not(.is-disabled) {
  color: var(--tu-color-text, #71757f);
}

.tu-input-number__decrease {
  left: 1px;
}

.tu-input-number__increase {
  right: 1px;
}

.tu-input-number.is-without-controls .tu-input__inner {
  padding: 0;
}

.tu-input-number.is-controls-at-right .tu-input-number__decrease, .tu-input-number.is-controls-at-right .tu-input-number__increase {
  height: 16px;
  line-height: 16px;
}

.tu-input-number.is-controls-at-right .tu-input-number__decrease {
  right: 1px;
  bottom: 1px;
  top: auto;
  left: auto;
}

.tu-input-number.is-controls-at-right .tu-input__inner {
  text-align: left;
  padding-left: 0;
}

.tu-input-number--mini {
  height: 24px;
  line-height: 24px;
}
.tu-input-number--mini .tu-input-number__decrease, .tu-input-number--mini .tu-input-number__increase {
  width: 24px;
  font-size: var(--tu-font-size-mini, 10px);
}
.tu-input-number--mini .tu-input-number__decrease > .tu-icon, .tu-input-number--mini .tu-input-number__increase > .tu-icon {
  font-size: var(--tu-font-size-mini, 10px);
}

.tu-input-number--mini.is-controls-at-right .tu-input-number__decrease, .tu-input-number--mini.is-controls-at-right .tu-input-number__increase {
  height: 12px;
  line-height: 12px;
}

.tu-input-number--small {
  height: 28px;
  line-height: 28px;
}
.tu-input-number--small .tu-input-number__decrease, .tu-input-number--small .tu-input-number__increase {
  width: 28px;
  font-size: var(--tu-font-size-small, 12px);
}
.tu-input-number--small .tu-input-number__decrease > .tu-icon, .tu-input-number--small .tu-input-number__increase > .tu-icon {
  font-size: var(--tu-font-size-small, 12px);
}

.tu-input-number--small.is-controls-at-right .tu-input-number__decrease, .tu-input-number--small.is-controls-at-right .tu-input-number__increase {
  height: 14px;
  line-height: 14px;
}

.tu-input-number--medium {
  height: 32px;
  line-height: 32px;
}
.tu-input-number--medium .tu-input-number__decrease, .tu-input-number--medium .tu-input-number__increase {
  width: 32px;
  font-size: var(--tu-font-size-medium, 14px);
}
.tu-input-number--medium .tu-input-number__decrease > .tu-icon, .tu-input-number--medium .tu-input-number__increase > .tu-icon {
  font-size: var(--tu-font-size-medium, 14px);
}

.tu-input-number--medium.is-controls-at-right .tu-input-number__decrease, .tu-input-number--medium.is-controls-at-right .tu-input-number__increase {
  height: 16px;
  line-height: 16px;
}

.tu-input-number--large {
  height: 36px;
  line-height: 36px;
}
.tu-input-number--large .tu-input-number__decrease, .tu-input-number--large .tu-input-number__increase {
  width: 36px;
  font-size: var(--tu-font-size-large, 14px);
}
.tu-input-number--large .tu-input-number__decrease > .tu-icon, .tu-input-number--large .tu-input-number__increase > .tu-icon {
  font-size: var(--tu-font-size-large, 14px);
}

.tu-input-number--large.is-controls-at-right .tu-input-number__decrease, .tu-input-number--large.is-controls-at-right .tu-input-number__increase {
  height: 18px;
  line-height: 18px;
}

.tu-input-number .tu-input__inner {
  text-align: center;
}
.tu-input-number .tu-input__inner::-webkit-inner-spin-button, .tu-input-number .tu-input__inner::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}