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Bootstrap 4 Sass Mixins [Cheat sheet with examples]
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| /* -------------------------------------------------------------------------- */ | |
| // All Bootstrap 4 Sass Mixins [Cheat sheet] | |
| // Updated to Bootstrap v4.5.x | |
| // @author https://anschaef.de | |
| // @see https://github.com/twbs/bootstrap/tree/master/scss/mixins | |
| /* -------------------------------------------------------------------------- */ | |
| /* | |
| // ########################################################################## */ | |
| // New cheat sheet for Bootstrap 5: | |
| // https://gist.github.com/anschaef/09c5426ce1619b381b9c4297a6fc0914 | |
| // ########################################################################## */ | |
| */ | |
| // Grid variables | |
| $grid-columns: 12; | |
| $grid-gutter-width: 30px; | |
| $grid-breakpoints: ( | |
| xs: 0, | |
| sm: 576px, | |
| md: 768px, | |
| lg: 992px, | |
| xl: 1200px | |
| ); | |
| $container-max-widths: ( | |
| sm: 540px, | |
| md: 720px, | |
| lg: 960px, | |
| xl: 1140px | |
| ); | |
| /* -------------------------------------------------------------------------- */ | |
| // Breakpoint viewport sizes and media queries. | |
| // Breakpoints are defined as a map of (name: minimum width), order from small to large: | |
| // (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px) | |
| // Media of at least the minimum breakpoint width. No query for the smallest breakpoint. | |
| // Makes the @content apply to the given breakpoint and wider. | |
| @include media-breakpoint-up($name, $breakpoints: $grid-breakpoints) | |
| // Media of at most the maximum breakpoint width. No query for the largest breakpoint. | |
| // Makes the @content apply to the given breakpoint and narrower. | |
| @include media-breakpoint-down($name, $breakpoints: $grid-breakpoints) | |
| // Media that spans multiple breakpoint widths. | |
| // Makes the @content apply between the min and max breakpoints | |
| @include media-breakpoint-between($lower, $upper, $breakpoints: $grid-breakpoints) | |
| // Media between the breakpoint's minimum and maximum widths. | |
| // No minimum for the smallest breakpoint, and no maximum for the largest one. | |
| // Makes the @content apply only to the given breakpoint, not viewports any wider or narrower. | |
| @include media-breakpoint-only($name, $breakpoints: $grid-breakpoints) | |
| // Example usage | |
| .some-class { | |
| @include media-breakpoint-up(sm) { | |
| // Larger than sm: 576px | |
| display: inline; | |
| } | |
| @include media-breakpoint-down(md) { | |
| // Smaller than md: 768px | |
| display: block; | |
| } | |
| } | |
| /* -------------------------------------------------------------------------- */ | |
| // Grid system | |
| // @see https://getbootstrap.com/docs/4.5/layout/grid/#sass-mixins | |
| // Generate semantic grid columns with these mixins. | |
| @include make-container($gutter: $grid-gutter-width) | |
| // For each breakpoint, define the maximum width of the container in a media query | |
| @include make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) | |
| // Creates a wrapper for a series of columns | |
| @include make-row($gutter: $grid-gutter-width) | |
| // Make the element grid-ready (applying everything but the width) | |
| @include make-col-ready($gutter: $grid-gutter-width) | |
| // Add a `max-width` to ensure content within each column does not blow out | |
| // the width of the column. Applies to IE10+ and Firefox. Chrome and Safari | |
| // do not appear to require this. | |
| @include make-col($size, $columns: $grid-columns) | |
| // Reset earlier grid tiers | |
| @include make-col-auto() | |
| @include make-col-offset($size, $columns: $grid-columns) | |
| // Row columns | |
| // Specify on a parent element(e.g., .row) to force immediate children into NN | |
| // numberof columns. Supports wrapping to new lines, but does not do a Masonry | |
| // style grid. | |
| @include row-cols($count) | |
| // Example usage | |
| /* | |
| <div class="example-container"> | |
| <div class="example-row"> | |
| <div class="example-content-main">Main content</div> | |
| <div class="example-content-secondary">Secondary content</div> | |
| </div> | |
| </div> | |
| */ | |
| .example-container { | |
| width: 800px; | |
| @include make-container(); | |
| } | |
| .example-row { | |
| @include make-row(); | |
| } | |
| .example-content-main { | |
| @include make-col-ready(); | |
| @include media-breakpoint-up(sm) { | |
| @include make-col(6); | |
| } | |
| @include media-breakpoint-up(lg) { | |
| @include make-col(8); | |
| } | |
| } | |
| .example-content-secondary { | |
| @include make-col-ready(); | |
| @include media-breakpoint-up(sm) { | |
| @include make-col(6); | |
| } | |
| @include media-breakpoint-up(lg) { | |
| @include make-col(4); | |
| } | |
| } | |
| /* -------------------------------------------------------------------------- */ | |
| // Alerts | |
| @include alert-variant($background, $border, $color) | |
| /* -------------------------------------------------------------------------- */ | |
| // Contextual backgrounds | |
| @include bg-variant($parent, $color, $ignore-warning: false) | |
| @include bg-gradient-variant($parent, $color, $ignore-warning: false) | |
| /* -------------------------------------------------------------------------- */ | |
| // Badges | |
| @include badge-variant($bg) | |
| /* -------------------------------------------------------------------------- */ | |
| // Single side border-radius | |
| @include border-radius($radius: $border-radius, $fallback-border-radius: false) | |
| @include border-top-radius($radius) | |
| @include border-right-radius($radius) | |
| @include border-bottom-radius($radius) | |
| @include border-left-radius($radius) | |
| @include border-top-left-radius($radius) | |
| @include border-top-right-radius($radius) | |
| @include border-bottom-right-radius($radius) | |
| @include border-bottom-left-radius($radius) | |
| /* -------------------------------------------------------------------------- */ | |
| // Shadows | |
| @include box-shadow($shadow...) | |
| /* -------------------------------------------------------------------------- */ | |
| // Button variants | |
| // Easily pump out default styles, as well as :hover, :focus, :active, | |
| // and disabled options for all buttons | |
| @include button-variant($background, $border, $hover-background: darken($background, 7.5%), $hover-border: darken($border, 10%), $active-background: darken($background, 10%), $active-border: darken($border, 12.5%)) | |
| @include button-outline-variant($color, $color-hover: color-yiq($color), $active-background: $color, $active-border: $color) | |
| // Button sizes | |
| @include button-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) | |
| /* -------------------------------------------------------------------------- */ | |
| // Clearfix | |
| // @see https://getbootstrap.com/docs/4.5/utilities/clearfix/ | |
| @include clearfix() | |
| /* -------------------------------------------------------------------------- */ | |
| // Float | |
| // @see https://getbootstrap.com/docs/4.5/utilities/float/ | |
| @include float-left() | |
| @include float-right() | |
| @include float-none() | |
| /* -------------------------------------------------------------------------- */ | |
| // Form control focus state | |
| // Generate a customized focus state and for any input with the specified color, | |
| // which defaults to the `@input-border-color-focus` variable. | |
| @include form-control-focus($ignore-warning: false) | |
| @include form-validation-state-selector($state) | |
| @include form-validation-state($state, $color, $icon) | |
| /* -------------------------------------------------------------------------- */ | |
| // Gradients | |
| @include gradient-bg($color) | |
| // Horizontal gradient, from left to right | |
| // Creates two color stops, start and end, by specifying a color and position for each color stop. | |
| @include gradient-x($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%) | |
| // Vertical gradient, from top to bottom | |
| // Creates two color stops, start and end, by specifying a color and position for each color stop. | |
| @include gradient-y($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%) | |
| @include gradient-directional($start-color: $gray-700, $end-color: $gray-800, $deg: 45deg) | |
| @include gradient-x-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) | |
| @include gradient-y-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) | |
| @include gradient-radial($inner-color: $gray-700, $outer-color: $gray-800) | |
| @include gradient-striped($color: rgba($white, .15), $angle: 45deg) | |
| /* -------------------------------------------------------------------------- */ | |
| // Framework grid generation | |
| // Used only by Bootstrap to generate the correct number of grid classes given | |
| // any value of `$grid-columns`. | |
| @include make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) | |
| /* -------------------------------------------------------------------------- */ | |
| // Hover state | |
| @include hover() | |
| @include hover-focus() | |
| @include plain-hover-focus() | |
| @include hover-focus-active() | |
| /* -------------------------------------------------------------------------- */ | |
| // Responsive image | |
| // Keep images from scaling beyond the width of their parents. | |
| @include img-fluid() | |
| // Retina image | |
| // Short retina mixin for setting background-image and -size. | |
| @include img-retina($file-1x, $file-2x, $width-1x, $height-1x) | |
| /* -------------------------------------------------------------------------- */ | |
| // List Groups | |
| @include list-group-item-variant($state, $background, $color) | |
| /* -------------------------------------------------------------------------- */ | |
| // Lists | |
| // Unstyled keeps list items block level, just removes default browser padding and list-style | |
| @include list-unstyled() | |
| /* -------------------------------------------------------------------------- */ | |
| // Horizontal dividers | |
| // Dividers (basically an hr) within dropdowns and nav lists | |
| @include nav-divider($color: $nav-divider-color, $margin-y: $nav-divider-margin-y, $ignore-warning: false) | |
| /* -------------------------------------------------------------------------- */ | |
| // Navbar vertical align | |
| // Vertically center elements in the navbar. | |
| // Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin. | |
| // @include navbar-vertical-align($element-height) | |
| /* -------------------------------------------------------------------------- */ | |
| // Pagination | |
| @include pagination-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) | |
| /* -------------------------------------------------------------------------- */ | |
| // Text reset | |
| @include reset-text() | |
| /* -------------------------------------------------------------------------- */ | |
| // Resize anything | |
| @include resizable($direction) // Options: horizontal, vertical, both | |
| /* -------------------------------------------------------------------------- */ | |
| // Only display content to screen readers | |
| // @see https://getbootstrap.com/docs/4.5/utilities/screen-readers/ | |
| @include sr-only() | |
| // Use in conjunction with .sr-only to only display content when it's focused. | |
| // Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1 | |
| @include sr-only-focusable() | |
| /* -------------------------------------------------------------------------- */ | |
| // Sizing shortcuts | |
| @include size($width, $height: $width) | |
| /* -------------------------------------------------------------------------- */ | |
| // Tables | |
| @include table-row-variant($state, $background) | |
| /* -------------------------------------------------------------------------- */ | |
| // Typography | |
| @include text-emphasis-variant($parent, $color) | |
| /* -------------------------------------------------------------------------- */ | |
| // CSS image replacement | |
| // @see https://getbootstrap.com/docs/4.5/utilities/image-replacement/ | |
| @include text-hide($ignore-warning: false) | |
| /* -------------------------------------------------------------------------- */ | |
| // Text truncate | |
| // Requires inline-block or block for proper styling | |
| @include text-truncate() | |
| /* -------------------------------------------------------------------------- */ | |
| // Transitions | |
| @include transition($transition...) | |
| /* -------------------------------------------------------------------------- */ | |
| // Visibility | |
| // @see https://getbootstrap.com/docs/4.5/utilities/visibility/ | |
| @include invisible($visibility) // Options: collapse, hidden, visible | |
| /* -------------------------------------------------------------------------- */ | |
| // Carets | |
| @include caret-down() | |
| @include caret-up() | |
| @include caret-right() | |
| @include caret-left() | |
| @include caret($direction: down) | |
| /* -------------------------------------------------------------------------- */ | |
| // Deprecate mixin | |
| // This mixin can be used to deprecate mixins or functions. | |
| // `$enable-deprecation-messages` is a global variable, `$ignore-warning` is a variable that can be passed to | |
| // some deprecated mixins to suppress the warning (for example if the mixin is still be used in the current version of Bootstrap) | |
| @include deprecate($name, $deprecate-version, $remove-version, $ignore-warning: false) | |
| /* -------------------------------------------------------------------------- */ | |
| // New since v4.3: Responsive font-size mixin | |
| // @see https://getbootstrap.com/docs/4.5/content/typography/#responsive-font-sizes | |
| // Aliases: @include font-size($fs, $important: false), @include responsive-font-size($fs, $important: false) | |
| @include rfs($fs, $important: false) |
Bootstrap 5 is going to have more utility classes (d-block or border-top) and an API to generate your own[1]. I want to use it in a Bootstrap 4.x project so I just created a gist with the stuff you need and an example. Maybe someone finds this useful: https://gist.github.com/marcus-at-localhost/076745dd7684963bd2aac30a5d7b73c1
@anschaef
WARNING: size() has been deprecated as of v4.3.0. It will be removed entirely in v5.
New cheat sheet for Bootstrap 5 here
https://gist.github.com/anschaef/09c5426ce1619b381b9c4297a6fc0914
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Updated to Bootstrap v4.5 today