cheatsheets/bootstrap.md

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---
title: Bootstrap
prism_languages: [scss, haml, html]
weight: -1
category: CSS
description: |
.container .row .col-md-6, @screen-sm-min, .form-control, grids, .modal-content, tooltips, and other Bootstrap CSS examples.
---
### Screen sizes
```
768 992 1200
' ' ' ' ' ' ' ' '
<---------^------------^------------------^--------->
xs sm md lg
(phone) (tablet) (laptop) (desktop)
```
Min:
```scss
@media (min-width: @screen-sm-min) // >= 768px (small tablet)
@media (min-width: @screen-md-min) // >= 992px (medium laptop)
@media (min-width: @screen-lg-min) // >= 1200px (large desktop)
```
Max:
```scss
@media (max-width: @screen-xs-max) { // < 768px (xsmall phone)
@media (max-width: @screen-sm-max) { // < 992px (small tablet)
@media (max-width: @screen-md-max) { // < 1200px (medium laptop)
```
### Columns
```scss
.container
.container-fluid
```
```scss
.col-xs-1
.col-sm-1
.col-md-1
.col-lg-1
.col-md-offset-1
```
Mixins:
```scss
@include make-xs-column(12);
@include make-sm-column(6);
@include make-md-column(3);
@include make-lg-column(3);
```
```scss
@include make-sm-column-offset(1);
@include make-sm-column-push(1);
@include make-sm-column-pull(1);
```
### Utilities
```scss
.pull-left
.pull-right
```
```scss
.hidden-{xs,sm,md,lg}
.visible-{xs,sm,md,lg}
.visible-{xs,sm,md,lg,print}-{block,inline,inline-block}
```
```scss
.center-block /* margin: auto */
.clearfix
.text-{center,left,right,justify,nowrap}
.text-{lowercase,uppercase,capitalize}
```
```scss
.show
.hidden
```
### Modal
```html
<a data-toggle='modal' data-target='#new'>
```
```haml
#new.modal.fade(role='dialog')
.modal-dialog // .modal-lg, .modal-sm
.modal-content
.modal-header
%h4.modal-title hello
%button.close{type: 'button', data: { dismiss: 'modal' }}
%span{'aria-hidden' => true}!= "&times;"
%span.sr-only Close
.modal-body
...
.modal-footer
...
```
### Modal via ajax (Rails)
```haml
%button.btn{data: { |
toggle: 'modal', |
target: '#chooseTheme', |
remote: '/path/to/remote'}
Change Theme
```
```haml
.modal.fade#chooseTheme
.modal-dialog.modal-xl
.modal-content
.modal-header
%h4.modal-title Choose a theme
.modal-body
.spinner-panel.-lg
%i
```
### Tooltip
```html
<span
data-toggle='tooltip'
title='tooltip'
data-placement='left|top|bottom|right'>
```
```js
$(function () {
$('[data-toogle~="tooltip"]').tooltip()
})
```
### Input groups
```haml
.input-group
input.form-control(type='text')
.input-group-addon years
```