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Select

Personaliza los <select> nativos con CSS personalizado que cambia la apariencia inicial del elemento.

En esta página

Por defecto

Los menús <select> personalizados solo necesitan una clase personalizada, .form-select para activar los estilos personalizados. Los estilos personalizados están limitados a la apariencia inicial de <select> y no pueden modificar <option> debido a las limitaciones del navegador. 

<select class="form-select" aria-label="Default select example">
  <option selected>Abre este menú select</option>
  <option value="1">Uno</option>
  <option value="2">Dos</option>
  <option value="3">Tres</option>
</select>

Dimensionamiento

También puedes elegir entre selects pequeñas y grandes para que coincidan con nuestras entradas de texto de tamaño similar.

<select class="form-select form-select-lg mb-3" aria-label="Ejemplo de .form-select-lg">
  <option selected>Abre este menú select</option>
  <option value="1">Uno</option>
  <option value="2">Dos</option>
  <option value="3">Tres</option>
</select>

<select class="form-select form-select-sm" aria-label="Ejemplo de .form-select-sm">
  <option selected>Abre este menú select</option>
  <option value="1">Uno</option>
  <option value="2">Dos</option>
  <option value="3">Tres</option>
</select>

El atributo multiple también es compatible:

<select class="form-select" multiple aria-label="Ejemplo de multiple select">
  <option selected>Abre este menú select</option>
  <option value="1">Uno</option>
  <option value="2">Dos</option>
  <option value="3">Tres</option>
</select>

Al igual que el atributo size:

<select class="form-select" size="3" aria-label="Ejemplo de select de tamaño 3">
  <option selected>Abre este menú select</option>
  <option value="1">Uno</option>
  <option value="2">Dos</option>
  <option value="3">Tres</option>
</select>

Deshabilitado

Agrega el atributo booleano disabled en un select para darle una apariencia atenuada y eliminar los eventos de puntero.

<select class="form-select" aria-label="Ejemplo de select deshabilitado" disabled>
  <option selected>Abre este menú select</option>
  <option value="1">Uno</option>
  <option value="2">Dos</option>
  <option value="3">Tres</option>
</select>

Sass

Variables

$form-select-padding-y:             $input-padding-y;
$form-select-padding-x:             $input-padding-x;
$form-select-font-family:           $input-font-family;
$form-select-font-size:             $input-font-size;
$form-select-indicator-padding:     $form-select-padding-x * 3; // Extra padding for background-image
$form-select-font-weight:           $input-font-weight;
$form-select-line-height:           $input-line-height;
$form-select-color:                 $input-color;
$form-select-bg:                    $input-bg;
$form-select-disabled-color:        null;
$form-select-disabled-bg:           $gray-200;
$form-select-disabled-border-color: $input-disabled-border-color;
$form-select-bg-position:           right $form-select-padding-x center;
$form-select-bg-size:               16px 12px; // In pixels because image dimensions
$form-select-indicator-color:       $gray-800;
$form-select-indicator:             url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='#{$form-select-indicator-color}' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/></svg>");

$form-select-feedback-icon-padding-end: $form-select-padding-x * 2.5 + $form-select-indicator-padding;
$form-select-feedback-icon-position:    center right $form-select-indicator-padding;
$form-select-feedback-icon-size:        $input-height-inner-half $input-height-inner-half;

$form-select-border-width:        $input-border-width;
$form-select-border-color:        $input-border-color;
$form-select-border-radius:       $input-border-radius;
$form-select-box-shadow:          $box-shadow-inset;

$form-select-focus-border-color:  $input-focus-border-color;
$form-select-focus-width:         $input-focus-width;
$form-select-focus-box-shadow:    0 0 0 $form-select-focus-width $input-btn-focus-color;

$form-select-padding-y-sm:        $input-padding-y-sm;
$form-select-padding-x-sm:        $input-padding-x-sm;
$form-select-font-size-sm:        $input-font-size-sm;
$form-select-border-radius-sm:    $input-border-radius-sm;

$form-select-padding-y-lg:        $input-padding-y-lg;
$form-select-padding-x-lg:        $input-padding-x-lg;
$form-select-font-size-lg:        $input-font-size-lg;
$form-select-border-radius-lg:    $input-border-radius-lg;

$form-select-transition:          $input-transition;