Grids
Bootstrap’s grid system allows up to 12 columns across the page. The grid system helps align page elements based on sequenced columns and rows. We use this column-based structure to place text, images, and functions in a consistent way throughout the design.
Components | Description | Syntax |
---|---|---|
Container | It is a container of row elements | .container |
Row | Container for column elements | .row |
Column | Used to specify the number of available columns. | .col |
column reset | Used to resolve issues regarding viewport. | .clearfix |
column offset | Moves the columns to the right by x columns. | .col-md|lg|cs-offset-value |
Extra Small | Used for portrait mobile phones. | .col-xs |
Small | Used for Landscapes phones | .col-sm |
Medium | Used for Tablets/Phablets | .col-md |
large | Used for Small-sized Desktops/Laptops | .col-lg |
Extra large | Used for Larger-sized Desktops/Laptops | .col-xl |
Example Code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js">
</script>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js">
</script>
</head>
<body>
<header>
<div class="container">
<h1 style="color: green">w3wiki</h1>
<strong>
A computer Science portal for Geeks
</strong>
</div>
</header>
<div class="container">
<div class="row">
<div class="bg bg-secondary w-100">
First Row
</div>
</div>
<div class="row">
<div class="bg bg-primary w-100">
Second row
</div>
</div>
</div>
<br />
<div class="container">
<div class="row">
<div class="col-xs-2 col-sm-6 col-md-3
col-lg-4 col-xl-6">
<div class="well bg bg-success">
First Column
</div>
</div>
<div class="col-xs-2 col-sm-6 col-md-3
col-lg-4 col-xl-6">
<div class="well bg bg-danger">
Second Column
</div>
</div>
<div class="col-xs-2 col-sm-6 col-md-3
col-lg-4 col-xl-6">
<div class="well bg bg-warning">
Third Column
</div>
</div>
<div class="col-xs-2 col-sm-6 col-md-3
col-lg-4 col-xl-6">
<div class="well bg bg-primary">
Fourth Column
</div>
</div>
</div>
</div>
<footer>
<hr />
<div class="container">
<p>
<a href="https://www.w3wiki.org/">
Visit
</a>
our website
</p>
<p>
<a href="https://www.w3wiki.org/">
Like
</a>
us on facebook
</p>
</div>
</footer>
</body>
</html>
Bootstrap Cheat Sheet – A Basic Guide to Bootstrap
Bootstrap is a free, open-source, potent CSS framework and toolkit used to create modern and responsive websites and web applications. It is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first websites. Nowadays, websites are perfect for all browsers and all sizes of screens.
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