Alessio18911,
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick.css"/>
<style type="text/css">
body {
background: lightblue;
}
.wrapper {
overflow: hidden;
}
.your-class {
width: 1200px;
padding: 0 50px;
margin: 0 auto;
overflow: hidden;
}
.slick-track {
height: 300px;
}
.slick-slide {
margin: 0 10px;
font-size: 116px;
font-weight: 700;
background: white;
text-align: center;
line-height: 300px;
}
.slick-arrow {
background: green;
z-index: 100;
}
.slick-prev::before,
.slick-next::before {
content: '';
}
.slick-prev {
left: 0;
}
.slick-next {
right: 0;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="your-class">
<div class="multiple-items">1</div>
<div class="multiple-items">2</div>
<div class="multiple-items">3</div>
<div class="multiple-items">4</div>
<div class="multiple-items">5</div>
<div class="multiple-items">6</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick.min.js"></script>
<script>
$(function(){
$('.your-class').slick({
infinite: true,
slidesToShow: 3,
slidesToScroll: 3
});
});
</script>
</body>
</html>