JSFiddle - React, Tailwind, and code Playground

HTML

<div class="dots-wrapper">
  <a href="#section-1"><span class="dots"></span></a>
  <a href="#section-2"><span class="dots"></span></a>
  <a href="#section-3"><span class="dots"></span></a>
  <a href="#section-4"><span class="dots"></span></a>
</div>
<section id="section-1"></section>
<section id="section-2"></section>
<section id="section-3"></section>
<section id="section-4"></section>

CSS

*, *::after, *::bedore {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  position: relative;
}

section {
  width: 100%;
  height: 400px;
}

#section-1 { background-color: grey; }
#section-2 { background-color: #FCFAF4; }
#section-3 { background-color: red; }
#section-4 { background-color: green; }

.dots-wrapper {
  position: fixed;
  top: 140px;
  right: 40px;
  display: flex;
  flex-direction: column;
  mix-blend-mode: difference;
}

.dots {
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #8ad;
  margin-bottom: 10px;
}