Have you ever wanted to change the default slide transition in the Bootstrap 4 Carousel to a fade transition instead of a slide one? Well, you’re in the right place!

To do that, the only change we need to make to the HTML code is adding the class carousel-fade to the main carousel div. In our example it’s the div with the ID element my-carousel. Next, we can just copy and paste the CSS code below and you will be good to go! Simple right?

<div id="my-carousel" class="carousel slide carousel-fade" data-ride="carousel" data-interval="5000">
    <ol class="carousel-indicators">
        <li data-target="#my-carousel" data-slide-to="0" class="active"></li>
        <li data-target="#my-carousel" data-slide-to="1"></li>
        <li data-target="#my-carousel" data-slide-to="2"></li>
    </ol>
    <div class="carousel-inner">
        <div class="carousel-item active">
            <img decoding="async" class="d-block w-100" src="//placehold.it/1200x400/cc09f0" alt="First slide">
        </div>
        <div class="carousel-item">
            <img decoding="async" class="d-block w-100" src="//placehold.it/1200x400/5609f0" alt="Second slide">
        </div>
        <div class="carousel-item">
            <img decoding="async" class="d-block w-100" src="//placehold.it/1200x400/cc54f0" alt="Third slide">
        </div>
    </div>
    <a class="carousel-control-prev" href="#my-carousel" 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="#my-carousel" role="button" data-slide="next">
        <span class="carousel-control-next-icon" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
    </a>
</div>

.carousel-fade .carousel-item {
	opacity: 0;
	transition-duration: .6s;
	transition-property: opacity;
}

.carousel-fade .carousel-item.active,
.carousel-fade .carousel-item-next.carousel-item-left,
.carousel-fade .carousel-item-prev.carousel-item-right {
	opacity: 1;
}

.carousel-fade .active.carousel-item-left,
.carousel-fade .active.carousel-item-right {
	opacity: 0;
}

.carousel-fade .carousel-item-next,
.carousel-fade .carousel-item-prev,
.carousel-fade .carousel-item.active,
.carousel-fade .active.carousel-item-left,
.carousel-fade .active.carousel-item-prev {
	transform: translateX(0);
	transform: translate3d(0, 0, 0);
}

We hope this has helped you. Happy coding!