Using .sticky class to list and buttons with attributes data-scrollspy for items detection

<div class="sticky fs-12 mb-4" 
    data-sticky-offset="100"    
    data-scrollspy="vertical" 
    data-scrollspy-items=".list-item"
    data-scrollspy-offset="100">
    <div class="list list-hover list-primary">
        <a class="list-item active" href="#section1">Section 1</a>
        <a class="list-item" href="#section2">Section 2</a>
        <a class="list-item" href="#section3">Section 3</a>
        <a class="list-item" href="#section4">Section 4</a>
    </div>
</div>