Media queries
Bootstrap media queries
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Since Bootstrap is developed to be mobile first, we use a handful of media queries to create sensible breakpoints for our layouts and interfaces. These breakpoints are mostly based on minimum viewport widths and allow us to scale up elements as the viewport changes.
Bootstrap primarily uses the following media query ranges — or breakpoints — in our source Sass files for our layout, grid system, and components.
Media queries as responsive breakpoints
Media queries available via Sass mixins
Since we write our source CSS in Sass, all our media queries are available via Sass mixins:
The other direction of responsive breakpoint queries
We occasionally use media queries that go in the other direction (the given screen size or smaller):
Media queries Sass mixins example
Once again, these media queries are also available via Sass mixins:
Minimal and maximum media queries
There are also media queries and mixins for targeting a single segment of screen sizes using the minimum and maximum breakpoint widths.
Minimal - maximum media queries Sass mixins
These media queries are also available via Sass mixins:
Media queries multiple breakpoints widths
Similarly, media queries may span multiple breakpoint widths:
The Sass mixin for targeting the same screen size range would be:
Usage of media queries within panels
Resize the screen to see the effect of media queries.
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Usage of media queries within cards
Resize the screen to see the effect of media queries.
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