About
Bootstrap “spinners” can be used to show the loading state in your projects. They’re built only with HTML and CSS, meaning you don’t need any JavaScript to create them. You will, however, need some custom JavaScript to toggle their visibility. Their appearance, alignment, and sizing can be easily customized with our amazing utility classes.
For accessibility purposes, each loader here includes role="status" and a nested <span class="visually-hidden">Loading...</span>.
prefers-reduced-motion media query. See the reduced motion section of our accessibility documentation.Border spinner
Use the border spinners for a lightweight loading indicator.
<div class="spinner-border" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-secondary" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-tertiary" role="status">
<span class="visually-hidden">Loading...</span>
</div>Large Variant
Use the .spinner-border-lg for a larger spinner.
<div class="spinner-border spinner-border-lg" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border spinner-border-lg text-secondary" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border spinner-border-lg text-tertiary" role="status">
<span class="visually-hidden">Loading...</span>
</div>Alignment
Spinners in Modus Bootstrap are built with rems, currentColor, and display: inline-flex. This means they can easily be resized, recolored, and quickly aligned.
Margin
Use margin utilities like .m-5 for easy spacing.
<div class="spinner-border m-5" role="status">
<span class="visually-hidden">Loading...</span>
</div>Placement
Use flexbox utilities, float utilities, or text alignment utilities to place spinners exactly where you need them in any situation.
Flex
<div class="d-flex justify-content-center">
<div class="spinner-border" role="status">
<span class="visually-hidden">Loading...</span>
</div>
</div><div class="d-flex align-items-center">
<strong role="status">Loading...</strong>
<div class="spinner-border ms-auto" aria-hidden="true"></div>
</div>Floats
<div class="clearfix">
<div class="spinner-border float-end" role="status">
<span class="visually-hidden">Loading...</span>
</div>
</div>Text align
<div class="text-center">
<div class="spinner-border" role="status">
<span class="visually-hidden">Loading...</span>
</div>
</div>Buttons
Use spinners within buttons to indicate an action is currently processing or taking place. You may also swap the text out of the spinner element and utilize button text as needed.
<button class="btn btn-primary" type="button" disabled>
<span class="spinner-border text-white spinner-border-sm" aria-hidden="true"></span>
<span class="visually-hidden" role="status">Loading...</span>
</button>
<button class="btn btn-primary" type="button" disabled>
<span class="spinner-border text-white spinner-border-sm" role="status" aria-hidden="true"></span>
Loading...
</button>CSS
Variables
As part of Bootstrap’s evolving CSS variables approach, spinners now use local CSS variables on .spinner-border and .spinner-grow for enhanced real-time customization. Values for the CSS variables are set via Sass, so Sass customization is still supported, too.
Border spinner variables:
--#{$prefix}spinner-width: #{$spinner-width};
--#{$prefix}spinner-height: #{$spinner-height};
--#{$prefix}spinner-vertical-align: #{$spinner-vertical-align};
--#{$prefix}spinner-border-width: #{$spinner-border-width};
--#{$prefix}spinner-animation-speed: #{$spinner-animation-speed};
--#{$prefix}spinner-animation-name: spinner-border;For both spinners, small spinner modifier classes are used to update the values of these CSS variables as needed. For example, the .spinner-border-sm class does the following:
--#{$prefix}spinner-width: #{$spinner-width-sm};
--#{$prefix}spinner-height: #{$spinner-height-sm};
--#{$prefix}spinner-border-width: #{$spinner-border-width-sm};Sass variables
$spinner-width: 2rem;
$spinner-height: $spinner-width;
$spinner-vertical-align: -.125em;
$spinner-border-width: .25em;
$spinner-animation-speed: .75s;
$spinner-width-sm: 1rem;
$spinner-height-sm: $spinner-width-sm;
$spinner-border-width-sm: .2em;
Keyframes
Used for creating the CSS animations for our spinners. Included in scss/_spinners.scss.
@keyframes spinner-border {
to { transform: rotate(360deg) #{"/* rtl:ignore */"}; }
}