Layout Utilities
Table of contents
Spacing
These spacers are available to use for margins and padding with responsive utility classes. Combine these prefixes with a screen size and spacing scale to use them responsively.
| Classname prefix | What it does |
|---|---|
.m- |
margin |
.mx- |
margin-left, margin-right |
.my- |
margin top, margin bottom |
.mt- |
margin-top |
.mr- |
margin-right |
.mb- |
margin-bottom |
.ml- |
margin-left |
| Classname prefix | What it does |
|---|---|
.p- |
padding |
.px- |
padding-left, padding-right |
.py- |
padding top, padding bottom |
.pt- |
padding-top |
.pr- |
padding-right |
.pb- |
padding-bottom |
.pl- |
padding-left |
Spacing values are based on a 1rem = 16px spacing scale, broken down into these units:
| Spacer/suffix | Size in rems | Rem converted to px |
|---|---|---|
1 |
0.25rem | 4px |
2 |
0.5rem | 8px |
3 |
0.75rem | 12px |
4 |
1rem | 16px |
5 |
1.5rem | 24px |
6 |
2rem | 32px |
7 |
2.5rem | 40px |
8 |
3rem | 48px |
Examples
In Markdown, use the {: } wrapper to apply custom classes:
This paragraph will have a margin bottom of 1rem/16px at large screens.
{: .mb-lg-4 }
This paragraph will have 2rem/32px of padding on the right and left at all screen sizes.
{: .px-6 }
Vertical Alignment
| Classname | What it does |
|---|---|
.v-align-baseline |
vertical-align: baseline |
.v-align-bottom |
vertical-align: bottom |
.v-align-middle |
vertical-align: middle |
.v-align-text-bottom |
vertical-align: text-bottom |
.v-align-text-top |
vertical-align: text-top |
.v-align-top |
vertical-align: top |
Display
Display classes aid in adapting the layout of the elements on a page:
| Class | |
|---|---|
.d-block |
display: block |
.d-flex |
display: flex |
.d-inline |
display: inline |
.d-inline-block |
display: inline-block |
.d-none |
display: none |
Use these classes in conjunction with the responsive modifiers.
Examples
In Markdown, use the {: } wrapper to apply custom classes:
This button will be hidden until medium screen sizes:
[ A button ](#url)
{: .d-none .d-md-inline-block }
These headings will be `inline-block`:
### heading 3
{: .d-inline-block }
### heading 3
{: .d-inline-block }