How to give negative margin in bootstrap 4?

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In this tutorial, we will learn how to give negative margin in bootstrap 4.

To give negative margin, put .m-n3 class to create negative margin in bootstrap 4.

Negative margins are usually used to stretch elements to fill or overflow their containers. Let us discuss a use case for negative margins. Take the following markdown that has three div that is centered and of width 300px.

Each of these div has a padding of 1rem and has a child div inside them.

Table of contents

  • Includes bootstrap view
  • Includes bootstrap library
  • Define its class name

Step 1: Includes bootstrap view

To ensure proper rendering and touch zooming for all devices, add the responsive viewport meta tag to your <head>.

<meta name="viewport" content="width=device-width, initial-scale=1">

Step 2: Includes bootstrap library

First of all, load the Bootstrap framework CSS into the head tag of your webpage.

<!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css">
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.slim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>
</head>

Step 3: Define its class name

After that, using the .mx-n4 class to create a negative margin.

<div class="container">
    <div class="mx-auto p-3 border" style="width: 300px">
        <div class=" p-2 bg-primary ">
            Div with no margin
        </div>
    </div>
    <div class="mx-auto p-3 border" style="width: 300px">
        <div class="mx-n4 p-2 bg-danger ">
            Div with negative margin overflow
        </div>
    </div>
    <div class="mx-auto p-3 border" style="width: 300px">
        <div class="m-n3 p-2 bg-warning ">
            Div with negative margin stretched to fit
        </div>
    </div>
</div>

Example.

Let’s look at the following example to understand how it basically works:

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Bootstrap Example</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css">
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.slim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>
</head>

<body>

<div class="container">
    <div class="mx-auto p-3 border" style="width: 300px">
        <div class=" p-2 bg-primary ">
            Div with no margin
        </div>
    </div>
    <div class="mx-auto p-3 border" style="width: 300px">
        <div class="mx-n4 p-2 bg-danger ">
            Div with negative margin overflow
        </div>
    </div>
    <div class="mx-auto p-3 border" style="width: 300px">
        <div class="m-n3 p-2 bg-warning ">
            Div with negative margin stretched to fit
        </div>
    </div>
</div>

</body>

</html>

Check the output of the above code example.

Bootstrap, Margin, Negative

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