JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>7ktTube Modified (more logos) | MoleTech</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script
      src="https://code.jquery.com/jquery-3.7.1.min.js"
      integrity="sha256-/JqT3SQfawRcv/BIHPThkBvs0OEvtFFmqPF/lYI/Cxo="
      crossorigin="anonymous"></script>
  </head>
  <body>
    <div class="content-container">
      <section data-page="1" class="page">
        <div class="container">
          <p>Page 1</p>
        </div>
      </section>
      <section data-page="2" class="page" hidden>
        <div class="container">
          <p>Page 2</p>
        </div>
      </section>
      <div class="bottomBar">
        <div class="pageControls">
          <button id="prev-btn">Previous</button>
          <p id="dispPgNum" class="pNoBr">1/2</p>
          <button id="next-btn">Next</button>
        </div>
      </div>
    </div>
  </body>
</html>

CSS

@import url('https://fonts.googleapis.com/css2?family=Balsamiq+Sans:ital,wght@0,400;0,700;1,400;1,700&display=swap');

body {
  font-family: 'Balsamiq sans', cursive;
  background-color: black;
  color: #00aa00;
}

html {
  /* Variables */
  --width-contcon: 50%;
  --width-bottomBar: 80%;
  --height-bottomBar: 26px;
  --bbcc-spacing: 5%;
}

.content-container {
  overflow: hidden;
  position: relative;
  border-left-width: 4px;
  border-left-style: solid;
  border-right-width: 4px;
  border-right-style: solid;
  border-image: radial-gradient(#dddddd, #00000000) 40;
  width: var(--width-contcon);
  height: 98vh;
  left: calc((100% - var(--width-contcon)) / 2);
}
.container {
  position: inherit;
  margin: 0 auto;
  border: 1px white solid;
}

.pNoBr {
  display: inline;
}
.bottomBar {
  padding: 6px;
  position: relative;
  border: 1px #ffffff solid;
  width: var(--width-bottomBar);
  top: calc((100% - var(--height-bottomBar)) / 1.16);
  left: calc((100% - var(--width-bottomBar)) / 2);
}
.pageControls {
  position: relative;
  left: calc(var(--width-bottomBar) / 2);
}

JavaScript

$(document).ready(function() {

	let page = 1;
	const pagesCount = $('section.page').length;
  const nextButton = $('#next-btn');
  const prevButton = $('#prev-btn');
  const currentPagePanel = $('#dispPgNum');
  
  function setPage(pageNum) {
    const selector = '[data-page="' + pageNum + '"]';

    const targetPage = $(`section${selector}`);
    const other = $(`section:not('${selector}')`);

    targetPage.show();
    other.hide();

		page = pageNum;
    nextButton.attr('disabled', page >= pagesCount);
    prevButton.attr('disabled', page <= 1);
    currentPagePanel.text(`${page}/${pagesCount}`);
  }
  
  setPage(1);
  
  nextButton.click(function() {
  	setPage(Math.min(page + 1, pagesCount));
  })
  
  
  prevButton.click(function() {
  	setPage(Math.max(page - 1, 1));
  })

});