What is Bootstrap?

Bootstrap is the most popular CSS Framework for developing responsive and mobile-first websites.

Bootstrap 5 is the newest version of Bootstrap

Bootstrap Quickstart

Example

<div class="bg-primary text-white p-5 text-center">
  <h1>My First Bootstrap Page</h1>
<p>Resize this page to see the responsive effect!</p>
</div>

<div class="container-fluid">
<div class="row">
    <div class="col-sm-4">
    <h2>London</h2>
      <p>London is the capital city of England.</p>
    <p>It is the most populous city in the United Kingdom,
      with a metropolitan area of over 13 million inhabitants.</p>
    </div>
    <div class="col-sm-4">
    <h2>Paris</h2>
    <p>Paris is the capital of France.</p>
      <p>The Paris area is one of the largest population centers in Europe,
      with more than 12 million inhabitants.</p>
    </div>
    <div class="col-sm-4">
    <h2>Tokyo</h2>
    <p>Tokyo is the capital of Japan.</p>
      <p>It is the center of the Greater Tokyo Area,
      and the most populous metropolitan area in the world.</p>
    </div>
</div>
</div>

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Click on the "Try it Yourself" button to see how it works.

Browser Support

Bootstrap 5 is the newest version of Bootstrap.

Bootstrap 5 supports all major browsers except Internet Explorer 11 and down.

If you require support for IE9 or IE8, you must use Bootstrap 3.

Bootstrap Containers

The container class is one of the most important Bootstrap classes.

It provides margins, padding, alignments, and more, to HTML elements.

Example

<div class="container">
<h1>This is a paragraph</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</div>

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Bootstrap Colors

London is the most populous city in the United Kingdom, with a metropolitan area of over 9 million inhabitants.

Example

<div class="container bg-primary text-white p-4">
<p>London is the most populous city in the United Kingdom, with a metropolitan area of over 9 million inhabitants.</p>
</div>

<div class="container bg-success text-white p-4">
<p>London is the most populous city in the United Kingdom, with a metropolitan area of over 9 million inhabitants.</p>
</div>

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Bootstrap Text Colors

This text is muted.

This text is important.

This text indicates success.

This text represents some information.

This text represents a warning.

This text represents danger.

Example

<div class="container">
  <p class="text-muted">This text is muted.</p>
  <p class="text-primary">This text is important.</p>
  <p class="text-success">This text indicates success.</p>
  <p class="text-info">This text represents some information.</p>
<p class="text-warning">This text represents a warning.</p>
  <p class="text-danger">This text represents danger.</p>
</div>

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Bootstrap Columns

Three equal-width columns, on all devices and screen widths:

Example

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Responsive Columns

Three equal-width columns scaling to stack on top of each other on small screens:

Example

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Bootstrap Tables

A boredered zebra-striped table:

Firstname	Lastname	Email
John	Doe	john@example.com
Mary	Moe	mary@example.com
July	Dooley	july@example.com

Example

<table class="table table-striped table-bordered">
<thead>
    <tr>
      <th>Firstname</th>
      <th>Lastname</th>
      <th>Email</th>
    </tr>
</thead>
<tbody>
    <tr>
      <td>John</td>
      <td>Doe</td>
      <td>john@example.com</td>
    </tr>
    <tr>
      <td>Mary</td>
      <td>Moe</td>
      <td>mary@example.com</td>
    </tr>
    <tr>
      <td>July</td>
      <td>Dooley</td>
      <td>july@example.com</td>
    </tr>
</tbody>
</table>

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Bootstrap Alerts

Bootstrap provides an easy way to create predefined alert messages:

Success! This alert box indicates a successful or positive action.

Warning! This alert box indicates a warning that might need attention.

Danger! This alert box indicates a dangerous or potentially negative action.

Primary! This alert box indicates an important action.

Example

<div class="alert alert-success">
<strong>Success!</strong> Indicates a successful or positive action.
</div>

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Bootstrap Buttons

Bootstrap provides different styles of buttons:

Example

<button type="button" class="btn">Basic</button>
<button type="button" class="btn btn-primary">Primary</button>
<button type="button" class="btn btn-secondary">Secondary</button>
<button type="button" class="btn btn-success">Success</button>
<button type="button" class="btn btn-info">Info</button>
<button type="button" class="btn btn-warning">Warning</button>
<button type="button" class="btn btn-danger">Danger</button>
<button type="button" class="btn btn-dark">Dark</button>

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Bootstrap Cards

John Doe

Some example text some example text. John Doe is an architect and engineer.

See Profile

Example

<div class="card" style="width:400px">
<img src="img_avatar1.png" alt="Card image">
<div class="card-body">
    <h4 class="card-title">John Doe</h4>
    <p class="card-text">Some example text.</p>
    <a href="#" class="btn btn-primary">See Profile</a>
</div>
</div>

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Full Bootstrap Tutorial

This has been a short description of Bootstrap.

For a full Bootstrap 5 tutorial go to W3Schools Bootstrap 5 Tutorial.

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