JSFiddle - React, Tailwind, and code Playground

HTML

<div class="nav-collapse">nav nav nav </div>

CSS

body {
    height: 3000px;
    top: 0;
    position: relative;
}
.nav-collapse {
    position: relative;
    top: 100px;
    width: 100%;
    background: whitesmoke;
    height: 100px;
}

JavaScript

$(window).scroll(function () {
    if ($(window).scrollTop() > 100) {
        $('.nav-collapse').css('top', $(window).scrollTop());
    }
}
);