ui/app/styles/components/_forms.scss

// Forms
// Placeholder text color
$label-color                    : $dark-grey !default;
$input-color-placeholder        : lighten($mid-grey, 5) !default;
$input-bg                       : lighten($light-grey, 2) !default;
$input-bg-hover                 : $mid-grey !default;
$input-bg-disabled              : lighten($mid-grey, 15%) !default;
$input-color                    : $secondary !default;
$input-border                   : darken($light-grey, 5) !default;
$input-group-addon-border-color : $input-border !default;
$input-border-focus             : $info !default;
$legend-color                   : $text-color !default;
$legend-border-color            : $light-grey !default;
$input-group-addon-bg           : $light-grey !default;
$select-bg                      : $body-bg;

select {
    display: block;
    width: 100%;
    box-sizing: border-box;
    border-width: 2px;
    border-color: $input-border;
    border-radius: 0;
    background: $select-bg;
    border: solid 2px $border;
    padding: 5px 10px;
    font-size: 15px;
    -o-appearance: none;
    -ms-appearance: none;
    -moz-appearance: none;
    -webkit-appearance: none;
    line-height: 24px;
    &:not([multiple]) {
      position: relative;
      background-image: url(images/dropdown-arrow.svg);
      background-repeat: no-repeat;
      background-size: 15px 10px;
      background-position: calc(100% - 10px) center;
    }
}

form {
    display: block;
    position: relative;
}

label {
    color: $label-color;
    display: inline-block;
}

input[type='checkbox'] {
    cursor: pointer;
    height: 1.25em;
    line-height: 1.25em;
    width: 1.25em;
}

input[type='text'],
input[type='password'],
input[type='number'],
input[type='date'],
input[type='email'],
input[type='search'],
input[type='tel'],
input[type='url'],
textarea {
    display: block;
    box-sizing: border-box;
    border-width: 1.25px;
    border-color: $input-border;
    border-radius: 0;
    border-style: solid;
    background: $input-bg;
    padding: 5px 10px;
    font-size: 15px;
    line-height: 24px;
    width: 100%;

    &[size] {
      display: inline-block;
      width: auto;
    }

    &::placeholder {
        color: $input-color-placeholder;
    }

    &:hover {
        border-color: $input-bg-hover;
        background: rgba($input-bg-hover, .2);
        &::placeholder {
            color: $input-bg-hover;
        }
    }
    &.disabled, &[disabled], &[disabled]:hover  {
        @extend .bg-disabled;
        border-color: $input-bg-disabled;
        cursor: not-allowed;
        &::placeholder {
            color: darken($input-bg-disabled, 5%);
        }
    }
    &:focus {
        background: rgba($input-border-focus, .2);
        border-color: $input-border-focus;
        &::placeholder {
            color: $input-border-focus;
        }
    }
}

.form-control-static {
  line-height: 24px;
  padding: 3px 0;
  border: 2px solid transparent;
}

///inline forms
.inline-form {
    .col-inline {
        padding: 9px 0;
    }
    .btn {
        border-radius: 0;
        overflow: hidden;
        // padding: 16px;
        position: relative;
    }
    .input-label, .inline-label {
        @extend .btn;
        @extend .gutless;
        display: block;
        line-height: 1.84;

        label {
            margin-top: 0;
        }

        &.input-xs {
            padding: 2px 3px;
            line-height: initial;
            font-size: .65em;
        }
        &.input-sm {
            padding: 3px 8px;
            font-size: 0.87em;
        }
        &.input-lg {
            padding: 18px 30px;
            font-size: 1.25em;
        }
    }

    .inline-label {
        text-align: left;
    }
}


/*!
 * Bootstrap v3.3.7 (http://getbootstrap.com)
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 */

.input-group {
    position: relative;
    display: table;
    border-collapse: separate;
}
.input-group.search-group {
  position: relative;

  input {
    padding-right: 34px;
  }

  .input-group-btn {
    position: absolute;
    right: 34px;
  }
}


.input-group .form-control:focus {
    z-index: 3;
}

.input-group-addon,
.input-group-btn,
.input-group .form-control {
    display: table-cell;
    vertical-align: middle;
}

.input-group-addon,
.input-group-btn {
    width: 1%;
    white-space: nowrap;
    vertical-align: middle;
}

.input-group-addon {
    @extend .input-label;
    padding: 6px 12px;
    font-size: 14px;
    font-weight: normal;
    line-height: 1;
    text-align: center;
}

.input-group-addon input[type="radio"],
.input-group-addon input[type="checkbox"] {
    margin-top: 0;
}

.input-group-addon:first-child {
    border-right: 0;
}

.input-group-addon:last-child {
    border-left: 0;
}

.input-group-btn {
    position: relative;
    white-space: nowrap;
}

.input-group-btn > .btn {
    position: relative;
    border-radius: 0;
}

.input-group-btn > .btn:hover,
.input-group-btn > .btn:focus,
.input-group-btn > .btn:active {
    z-index: 2;
}

.input-group-btn:first-child > .btn,
.input-group-btn:first-child > .btn-group {
    margin-right: -1px;
}

.input-group-btn:last-child > .btn,
.input-group-btn,
.input-group-btn:last-child > .btn-group {
    // z-index: -1;
}

//input sizes
.input-xs,
input.input-xs,
.input-group.input-xs input,
.input-group.input-xs .input-group-addon {
    padding: 2px 3px;
    line-height: initial;
    font-size: .65em;
}

.input-sm,
input.input-sm,
.input-group.input-sm input,
.input-group.input-sm .input-group-addon {
    padding: 3px 8px;
    font-size: 0.87em;
    max-height: 32px;
}

.input-lg,
input.input-lg,
.input-group.input-lg input,
.input-group.input-lg .input-group-addon {
    padding: 18px 30px;
    font-size: 1.25em;
}

.box, [class^='bg-'] {
  input[type='text'],
  input[type='password'],
  input[type='number'],
  input[type='date'],
  input[type='email'],
  input[type='search'],
  input[type='tel'],
  input[type='url'],
  textarea {
    border-color: darken($input-bg, 15);
    background: $body-bg;
  }
}

.box .input-group-addon.bg-default {
  background: darken($input-bg, 15);
}

.field-required {
  padding-left: 5px;
  font-weight: bold;
  color: $error;
}

.with-input {
  display: inline-block;
  vertical-align: middle;
}

.radio {
  padding: 5px 0;
}