阴影

示例

¥Examples

虽然组件上的阴影在 Bootstrap 中默认处于禁用状态，并且可以通过 $enable-shadows 启用，但你还可以使用我们的 box-shadow 工具类快速添加或删除阴影。包括对 .shadow-none 和三个默认尺寸（具有要匹配的关联变量）的支持。

¥While shadows on components are disabled by default in Bootstrap and can be enabled via $enable-shadows, you can also quickly add or remove a shadow with our box-shadow utility classes. Includes support for .shadow-none and three default sizes (which have associated variables to match).

<div class="shadow-none p-3 mb-5 bg-body-tertiary rounded">No shadow</div>
<div class="shadow-sm p-3 mb-5 bg-body-tertiary rounded">Small shadow</div>
<div class="shadow p-3 mb-5 bg-body-tertiary rounded">Regular shadow</div>
<div class="shadow-lg p-3 mb-5 bg-body-tertiary rounded">Larger shadow</div>

CSS

Sass 变量

¥Sass variables

$box-shadow:                  0 .5rem 1rem rgba($black, .15);
$box-shadow-sm:               0 .125rem .25rem rgba($black, .075);
$box-shadow-lg:               0 1rem 3rem rgba($black, .175);
$box-shadow-inset:            inset 0 1px 2px rgba($black, .075);

Sass 工具 API

¥Sass utilities API

影子工具在 scss/_utilities.scss 中的工具 API 中声明。Learn how to use the utilities API.

¥Shadow utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.

"shadow": (
  property: box-shadow,
  class: shadow,
  values: (
    null: var(--#{$prefix}box-shadow),
    sm: var(--#{$prefix}box-shadow-sm),
    lg: var(--#{$prefix}box-shadow-lg),
    none: none,
  )
),