---
layout: docs
title: Utilities for layout
description: Use any of our dozens of responsive utility classes for showing, hiding, aligning, and spacing content.
group: layout
---

For faster mobile-friendly and responsive development, Bootstrap includes dozens of utility classes for showing, hiding, aligning, and spacing content. Below is a primer on what's included in Bootstrap and how these utilities can help you with layout.

## Contents

* Will be replaced with the ToC, excluding the "Contents" header
{:toc}

## Changing `display`

## Flexbox options

## Margin and padding

## Toggle `visibility`