JSFiddle - React, Tailwind, and code Playground

HTML

<table class = "wdtscroll">
  <tr>
    <th>Company</th>
    <th>Contact</th>
    <th>Country</th>
    <th>Company</th>
    <th>Contact</th>
    <th>Country</th>
    <th>Company</th>
    <th>Contact</th>
    <th>Country</th>
    <th>Company</th>
    <th>Contact</th>
    <th>Country</th>
  </tr>
  <tr>
    <td>Alfreds Futterkiste</td>
    <td>Maria Anders</td>
    <td>Germany</td>
    <td>Alfreds Futterkiste</td>
    <td>Maria Anders</td>
    <td>Germany</td>
    <td>Alfreds Futterkiste</td>
    <td>Maria Anders</td>
    <td>Germany</td>
    <td>Alfreds Futterkiste</td>
    <td>Maria Anders</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
  </tr>
  <tr>
    <td>Centro comercial Moctezuma</td>
    <td>Francisco Chang</td>
    <td>Mexico</td>
    <td>Centro comercial Moctezuma</td>
    <td>Francisco Chang</td>
    <td>Mexico</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
  </tr>
  <tr>
    <td>Ernst Handel</td>
    <td>Roland Mendel</td>
    <td>Austria</td>
    <td>Ernst Handel</td>
    <td>Roland Mendel</td>
    <td>Austria</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
  </tr>
  <tr>
    <td>Island Trading</td>
    <td>Helen Bennett</td>
    <td>UK</td>
    <td>Ernst Handel</td>
    <td>Roland Mendel</td>
    <td>Austria</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
    <td>Berglunds snabbköp</td>
    <td>Christina Berglund</td>
    <td>Sweden</td>
 ...

CSS

.wdtscroll {
  display: block;
  font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
  border-collapse: collapse;
  overflow-x: auto;
  max-height: 300px;
  white-space: nowrap;
}
.wdtscroll td {
  max-width: 20vw;
  background-color: white;
  overflow: hidden;
}
.wdtscroll td, .wdtscroll th {
  border: 1px solid #ddd;
  padding: 8px;
}

.wdtscroll tr:nth-child(even) td { background-color: #f2f2f2; }

.wdtscroll tr:hover td { background-color: #ddd; }

.wdtscroll th {
  padding-top: 12px;
  padding-bottom: 12px;
  text-align: left;
  background-color: orange;
  color: grey;
  position: sticky;
  top: 0px;
}
.wdtscroll td:nth-child(1) {
  position: sticky;
  left: -1px;
  top: 0px;
  transition: 1s;
}

.wdtscroll td:nth-child(2) {
  position: sticky;
  left: 30px;
}

.wdtscroll th:nth-child(1) {
  position: sticky;
  top: 0px;
  left: 0px;
  z-index: 5;
}
.wdtscroll th:nth-child(2) {
  position: sticky;
  top: 0px;
  left: 30px;
  z-index: 6;
}



/* styles for when the header is in sticky mode */
.wdtscroll.isSticky tr td:nth-child(1) {
  background-color: salmon;
}
.wdtscroll.isSticky tr td:nth-child(2) {
  background-color: pink;
}

JavaScript

// get the sticky element
const stickyElm = document.querySelector('.wdtscroll td')
const tableElm = document.querySelector('.wdtscroll')

const observer = new IntersectionObserver( 
    ([e]) => {
        tableElm.classList.toggle('isSticky', e.intersectionRatio < 1)
    },
  {threshold: [1]}
);

window.onload = function(){
	observer.observe(stickyElm)
}