bootstrap 4 carousel
<div id="demo" class="carousel slide" data-ride="carousel">
<!--
Indicators -->
<ul class="carousel-indicators">
<li data-target="#demo" data-slide-to="0" class="active"></li>
<li data-target="#demo" data-slide-to="1"></li>
<li
data-target="#demo" data-slide-to="2"></li>
</ul>
<!--
The slideshow -->
<div class="carousel-inner">
<div class="carousel-item active">
<img src="la.jpg"
alt="Los Angeles">
</div>
<div
class="carousel-item">
<img src="chicago.jpg"
alt="Chicago">
</div>
<div
class="carousel-item">
<img src="ny.jpg"
alt="New York">
</div>
</div>
<!-- Left and right controls -->
<a class="carousel-control-prev"
href="#demo" data-slide="prev">
<span
class="carousel-control-prev-icon"></span>
</a>
<a
class="carousel-control-next" href="#demo" data-slide="next">
<span class="carousel-control-next-icon"></span>
</a>
</div>
<div id="demo" class="carousel slide" data-ride="carousel">
<!--
Indicators -->
<ul class="carousel-indicators">
<li data-target="#demo" data-slide-to="0" class="active"></li>
<li data-target="#demo" data-slide-to="1"></li>
<li
data-target="#demo" data-slide-to="2"></li>
</ul>
<!--
The slideshow -->
<div class="carousel-inner">
<div class="carousel-item active">
<img src="la.jpg"
alt="Soweto">
</div>
<div
class="carousel-item">
<img src="chicago.jpg"
alt="Joburg">
</div>
<div
class="carousel-item">
<img src="ny.jpg"
alt="Pretoria">
</div>
</div>
<!-- Left and right controls -->
<a class="carousel-control-prev"
href="#demo" data-slide="prev">
<span
class="carousel-control-prev-icon"></span>
</a>
<a
class="carousel-control-next" href="#demo" data-slide="next">
<span class="carousel-control-next-icon"></span>
</a>
</div>
<div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
<div class="carousel-inner">
<div class="carousel-item active">
<img class="d-block w-100" src="..." alt="First slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="..." alt="Second slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="..." alt="Third slide">
</div>
</div>
<a class="carousel-control-prev" href="#carouselExampleControls" 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="#carouselExampleControls" role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
<div id="carouselExampleSlidesOnly" class="carousel slide" data-ride="carousel">
<div class="carousel-inner">
<div class="carousel-item active">
<img class="d-block w-100" src="..." alt="First slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="..." alt="Second slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="..." alt="Third slide">
</div>
</div>
</div>