f734814f6b
* make spacer utils responsive by grid tier * update scale to add two levels, document them * change responsive spacing utils to avoid the xs abbreviation in the class name for that tier * update code snippet to match source * update usage in our docs * linter * docs updates
2.8 KiB
| layout | title | group |
|---|---|---|
| docs | Spacing | utilities |
Assign responsive-friendly margin or padding values to an element or a subset of its sides with shorthand classes. Includes support for individual properties, all properties, and vertical and horizontal properties. Classes are built from a default Sass map ranging from .25rem to 3rem.
Notation
Spacing utilities that apply to all breakpoints, from xs to xl, have no breakpoint abbreviation in them. This is because those classes are applied from min-width: 0 and up, and thus are not bound by a media query. The remaining breakpoints, however, do include a breakpoint abbreviation.
The classes are named using the format {property}{sides}-{size} for xs and {property}{sides}-{breakpoint}-{size} for sm, md, lg, and xl.
Where property is one of:
m- for classes that setmarginp- for classes that setpadding
Where sides is one of:
t- for classes that setmargin-toporpadding-topb- for classes that setmargin-bottomorpadding-bottoml- for classes that setmargin-leftorpadding-leftr- for classes that setmargin-rightorpadding-rightx- for classes that set both*-leftand*-righty- for classes that set both*-topand*-bottom- blank - for classes that set a
marginorpaddingon all 4 sides of the element
Where size is one of:
0- for classes that eliminate themarginorpaddingby setting it to01- (by default) for classes that set themarginorpaddingto$spacer-x * .25or$spacer-y * .252- (by default) for classes that set themarginorpaddingto$spacer-x * .5or$spacer-y * .53- (by default) for classes that set themarginorpaddingto$spacer-xor$spacer-y4- (by default) for classes that set themarginorpaddingto$spacer-x * 1.5or$spacer-y * 1.55- (by default) for classes that set themarginorpaddingto$spacer-x * 3or$spacer-y * 3
(You can add more sizes by adding entries to the $spacers Sass map variable.)
Examples
Here are some representative examples of these classes:
{% highlight scss %} .mt-0 { margin-top: 0 !important; }
.ml-1 { margin-left: ($spacer-x * .25) !important; }
.px-2 { padding-left: ($spacer-x * .5) !important; padding-right: ($spacer-x * .5) !important; }
.p-3 { padding: $spacer-y $spacer-x !important; } {% endhighlight %}
Horizontal centering
Additionally, Bootstrap also includes an .mx-auto class for horizontally centering fixed-width block level content by setting the horizontal margins to auto.
{% highlight html %}