code:
<!doctype html>
<html lang="hu">
<head>
<!-- Required meta tags -->
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<link rel="stylesheet" href="$016-breadcumb.css" />
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh"
crossorigin="anonymous" />
<title>07-carousel</title>
</head>
<body>
CONTENT START
<h1>07-01-carousel simple</h1>
<h3>Slides only</h3>
<div id="carouselExampleSlidesOnly" class="carousel slide w-75 m-auto" data-ride="carousel">
<div class="carousel-inner">
<div class="carousel-item active">
<!img src="..." class="d-block w-100" alt="...">
<svg class="bd-placeholder-img card-img-top" width="100%" height="180" xmlns="http://www.w3.org/2000/svg"
preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Image cap">
<title>Placeholder</title>
<rect width="100%" height="100%" fill="#bbbbbb"></rect>
<text x="50%" y="50%" text-anchor="middle" fill="#2e2226" dy=".3em">First slide</text>
</svg>
</div>
<div class="carousel-item">
<!img src="..." class="d-block w-100" alt="...">
<svg class="bd-placeholder-img card-img-top" width="100%" height="180" xmlns="http://www.w3.org/2000/svg"
preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Image cap">
<title>Placeholder</title>
<rect width="100%" height="100%" fill="#bbbbbb"></rect>
<text x="50%" y="50%" text-anchor="middle" fill="#2e2226" dy=".3em">Second slide</text>
</svg>
</div>
<div class="carousel-item">
<!img src="..." class="d-block w-100" alt="...">
<svg class="bd-placeholder-img card-img-top" width="100%" height="180" xmlns="http://www.w3.org/2000/svg"
preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Image cap">
<title>Placeholder</title>
<rect width="100%" height="100%" fill="#bbbbbb"></rect>
<text x="50%" y="50%" text-anchor="middle" fill="#2e2226" dy=".3em">Third slide</text>
</svg>
</div>
</div>
</div>
<hr />
CONTENT END
<h3 class="text-center">EoF</h3>
<hr />
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"
integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n"
crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"
integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo"
crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"
integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6"
crossorigin="anonymous"></script>
</body>
</html>