namaste/html/scss/pro/_material-select.scss

// Material selct
%user-select-none {
  user-select: none;
}

.select-label {
  position: absolute;
}

.select-wrapper {
  position: relative;
  input {
    &.select-dropdown {
      position: relative;
      cursor: pointer;
      background-color: transparent;
      border: none;
      border-bottom: 1px solid $input-border-color;
      outline: none;
      height: $material-select-wrapper-input-dropdown-height;
      line-height: $material-select-wrapper-input-dropdown-line-height;
      width: 100%;
      font-size: $material-select-wrapper-input-dropdown-font-size;
      margin: 0 0 $material-select-wrapper-input-dropdown-margin 0;
      padding: 0;
      display: block;
      &:disabled {
        color: $material-select-wrapper-input-dropdown-disabled-color;
        border-bottom-color: $material-select-wrapper-input-dropdown-disabled-border-bottom-color;
        cursor: default;
      }
    }
  }
  .select-dropdown {
    @extend %user-select-none;
  }
  .search-wrap {
    padding: $material-select-wrapper-search-wrap-py 0;
    display: block;
    margin: 0 $material-select-wrapper-search-wrap-mx;
    .md-form {
      margin-top: 0;
      input {
        padding-bottom: $material-select-wrapper-search-wrap-input-pb;
        margin-bottom: 0;
      }
    }
  }
  span.caret {
    color: initial;
    position: absolute;
    right: 0;
    top: $material-select-wrapper-span-caret-top;
    font-size: $material-select-wrapper-span-caret-font-size;
    &.disabled {
      color: $input-disabled-color;
    }
  }
  & + label {
    position: absolute;
    top: $material-select-wrapper-span-caret-label-top;
    font-size: $label-font-size;
  }
  i {
    color: $material-select-wrapper-input-dropdown-disabled-color;
  }
  ul {
    list-style-type: none;
    padding-left: 0;
  }
}

select {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  display: none !important;
  &.browser-default {
    display: block !important;
  }
  &:disabled {
    color: $material-select-wrapper-input-dropdown-disabled-color;
  }
}

.select-dropdown {
  [type=checkbox]:disabled:not(:checked)+label:before {
    margin-left: 0;
    margin-top: 0;
  }
  ul {
    list-style-type: none;
    padding: 0;
  }
  li {
    img {
      height: $dropdown-item-height - 10;
      width: $dropdown-item-height - 10;
      margin: $material-select-dropdown-li-img-my $material-select-dropdown-li-img-mx;
      float: right;
    }
    &.disabled, &.disabled > span, &.optgroup {
      color: $material-select-wrapper-input-dropdown-disabled-color;
      background-color: transparent!important;
      cursor: context-menu;
    }
    &.optgroup {
      border-top: 1px solid $dropdown-hover-bg-color;
      &.selected > span {
        color: $material-select-dropdown-li-optgroup-selected-span;
      }
      & > span {
        color: $material-select-dropdown-li-optgroup-span;
      }
    }
  }
}

.multiple-select-dropdown li [type="checkbox"] + label {
  height: $material-select-multiple-select-dropdown-height;
}

.dropdown-content {
  box-shadow: $z-depth-1;
  background-color: $dropdown-bg-color;
  margin: 0;
  display: none;
  min-width: $material-select-dropdown-content-min-width;
  max-height: $material-select-dropdown-content-max-height;
  overflow-y: auto;
  opacity: 0;
  position: absolute;
  z-index: 999;
  will-change: width, height;
  li {
    clear: both;
    color: $material-select-dropdown-content-li-color;
    cursor: pointer;
    line-height: $material-select-dropdown-content-li-line-height;
    width: 100%;
    text-align: left;
    text-transform: none;
    &:hover,
    &.active {
      background-color: $dropdown-hover-bg-color;
    }
    & > a,
    & > span {
      font-size: $material-select-dropdown-content-li-span-font-size;
      color: $dropdown-color;
      display: block;
      padding: $material-select-dropdown-content-li-span-padding;
    }
    // Icon alignment override
    & > a > i {
      height: inherit;
      line-height: inherit;
    }
  }
}

// Material select color variations
.colorful-select {
  .dropdown-content {
    padding: $material-select-colorful-dropdown-content-padding;
    li {
      &.active span {
        color: $material-select-colorful-dropdown-content-li-active-color !important;
        box-shadow: $z-depth-1-half;
        [type="checkbox"]:checked + label:before {
          border-color: transparent $white $white transparent;
        }
      }
      a:hover, span:hover {
        box-shadow: $z-depth-2;
        color: $material-select-colorful-dropdown-content-li-active-color !important;
        transition: $material-select-colorful-dropdown-content-li-hover-transition;
        border-radius: $material-select-colorful-dropdown-content-li-hover-border-radius;
        [type="checkbox"] + label:before {
          border-color: $white-base;
        }
        [type="checkbox"]:checked + label:before {
          border-color: transparent $white $white transparent;
        }
      }
      optgroup {
      }
      &.disabled,
      &:disabled,
      &.optgroup {
        &.active span {
          box-shadow: none;
          color: $material-select-wrapper-input-dropdown-disabled-color !important;
          border-bottom-color: $material-select-wrapper-input-dropdown-disabled-color;
          cursor: default;
        }
        a:hover, span:hover {
          box-shadow: none;
          color: $material-select-wrapper-input-dropdown-disabled-color !important;
          border-bottom-color: $material-select-wrapper-input-dropdown-disabled-color;
          cursor: default;
          background-color: $white !important;
        }
        label {
          cursor: default;
        }
      }
    }
  }
}

@each $type, $color in $dropdown-colors {
  .dropdown-#{$type} {
    .dropdown-content li {
      &.active, a, span:hover {
        background-color: $color !important;
      }
    }
    .search-wrap input:focus {
      border-bottom: 1px solid $color;
      box-shadow: 0 1px 0 0 $color;
    }
  }
}