ionic-framework/scss/_select.scss

/**
 * Select
 * --------------------------------------------------
 */


// shared styles for transparent select elements
.select-inline select,
.item-select select {
  @include appearance(none);
  border: none;
  background: transparent;
  color: #333;

  // hack to hide default dropdown arrow in FF
  text-indent: 1px;
  text-overflow: '';

  white-space: nowrap;
  font-size: $font-size-base;

  cursor: pointer;
}

.select-inline {
  position: relative;
  display: inline-block;
  overflow: hidden;
  border: $input-border-width solid $input-border;
  border-radius: 2px;
  background-color: $input-bg;
  color: $input-color;

  vertical-align: middle;
  font-size: $font-size-base;
  line-height: $font-size-base + 2;

  select {
    padding: 6px 25px 7px 8px;
  }
}

.select-inline + .select-inline {
  margin-left: 6px;
}

.item-select {
  position: relative;

  select {
    position: absolute;
    top: 0;
    right: 0;
    padding: ($item-padding - 2) ($item-padding * 3) ($item-padding) 5px;
    width: 100%;
    direction: rtl; // right align the select text

    &:focus {
      min-width: 30%;
      width: auto; // shrink width when opened
    }
  }
}


// shared styles for dropdown arrow
.select-inline:after,
.item-select:after {
  position: absolute;
  top: 50%;
  margin-top: -3px;
  width: 0;
  height: 0;
  border-top: 5px solid;
  border-right: 5px solid rgba(0, 0, 0, 0);
  border-left: 5px solid rgba(0, 0, 0, 0);
  color: #999;
  content: "";
  pointer-events: none;
}

.select-inline:after {
  right: 7px;
}

.item-select:after {
  right: $item-padding;
}

select {
  &[multiple],
  &[size] {
    height: auto;
  }
}