Tips for creating a full-width background image in a Bootstrap 4 carousel

I am struggling with making the images in my 2 slide carousel full width. I have built the carousel using Bootstrap 4, and each slide has an image as its background.

Typically, I would use CSS properties like background-size: cover, background-attachment: fixed;, and background-repeat: no-repeat to achieve a similar effect on a webpage. However, applying these properties to the carousel elements didn't work as expected.

Below is the code snippet that includes the carousel setup and attempts to apply the background size, attachment, and cover properties:

<div id="officeCarousel" class="carousel slide" data-ride="carousel" style="width:100%;">
    <ol class="carousel-indicators">
      <li data-target="#officeCarousel" data-slide-to="0" class="active"></li>
      <li data-target="#officeCarousel" data-slide-to="1"></li>
    </ol>
    <div class="carousel-inner" role="listbox">
      <div class="carousel-item active">
        <img class="d-block img-fluid" src="office1.png" alt="First slide">
        <div class="carousel-caption d-none d-md-block">
          <div class="card card-inverse card-success mb-3 text-center">
            <div class="card-block">
              <h4 class="card-title">Office 1</h4>
              <p class="card-text">Work from the heart of the newly renovated area.</p>
                <a href="#" class="card-link">About this office</a>
<a href="#" class="card-link">Book this office</a>
            </div>
          </div>
        </div>
      </div>
      <div class="carousel-item">
        <img class="d-block img-fluid" src="office2.jpg" alt="Second slide">
        <div class="carousel-caption d-none d-md-block">
          <div class="card card-inverse card-success mb-3 text-center">
            <div class="card-block">
              <h4 class="card-title">Office 2</h4>
              <p class="card-text">Work from this inner-city rural village.</p>
                <a href="#" class="card-link">About this office</a>
<a href="#" class="card-link">Book this office</a>
            </div>
          </div>
        </div>
      </div>
    </div>
    <a class="carousel-control-prev" href="#officeCarousel" role="button" data-slide="prev" >
      <span class="carousel-control-prev-icon" aria-hidden="true"></span>
      <span class="sr-only">Previous</span>
    </a>
    <a class="carousel-control-next" href="#officeCarousel" role="button" data-slide="next">
      <span class="carousel-control-next-icon" aria-hidden="true"></span>
      <span class="sr-only">Next</span>
    </a>
  </div>

If anyone can provide assistance with resolving this issue, it would be greatly appreciated!

Edit: Below is the relevant CSS sections. These are default styles from Bootstrap V4.

.carousel {
  position: relative;
}

.carousel-inner {
  position: relative;
  width: 100%;
  overflow: hidden
}

.carousel-item {
  position: relative;
  display: none;
  width: 100%
}

Answer №1

Find a comprehensive solution with a working demo here:

To implement this solution on your HTML page, follow these steps (Bootstrap 4 download or CDN link replacement required):

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

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <title>Full Slider - Start Bootstrap Template</title>

    <!-- Include Bootstrap core CSS -->
    <link href="../Content/css/bootstrap.min.css" rel="stylesheet" />

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <script src="../Scripts/bootstrap.bundle.min.js"></script>
</head>
<body>

<style>
    .carousel-item {
    height: 100%;
    min-height: 300px;
    background: no-repeat center center scroll;
    background-size: cover;
    }
</style>

<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
    <ol class="carousel-indicators">
        <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
        <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
        <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
    
    <div class="carousel-inner" role="listbox">
        <!-- Slide One - Set the background image for this slide in the line below -->
        <div class="carousel-item active" style="background-image: url('http://placehold.it/1900x1080')">
            <div class="carousel-caption d-none d-md-block">
                <h3>First Slide</h3>
                <p>This is a description for the first slide.</p>
            </div>
        </div>
        <!-- Slide Two - Set the background image for this slide in the line below -->
        <div class="carousel-item" style="background-image: url('http://placehold.it/1900x1080')">
            <div class="carousel-caption d-none d-md-block">
                <h3>Second Slide</h3>
                <p>This is a description for the second slide.</p>
            </div>
        </div>
        <!-- Slide Three - Set the background image for this slide in the line below -->
        <div class="carousel-item" style="background-image: url('http://placehold.it/1900x1080')">
            <div class="carousel-caption d-none d-md-block">
                <h3>Third Slide</h3>
                <p>This is a description for the third slide.</p>
            </div>
        </div>
    </div>
    
    <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
        <span class="carousel-control-prev-icon" aria-hidden="true"></span>
        <span class="sr-only">Previous</span>
    </a>
    <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
        <span class="carousel-control-next-icon" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
    </a>
</div>


</body>
</html>

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