JSFiddle - React, Tailwind, and code Playground

HTML

<div class="tabs">
    <ul>
        <li><a href="">Qualification</a></li>
        <li><a href="">Profile</a></li>
        <li><a href="">Skills Assessment</a></li>
        <li><a href="">Interview Prep</a></li>
        <li><a href="">Debrief</a></li>
        <li><a href="">Offer</a></li>
        <li><a href="">Follow Up</a></li>
    </ul>
</div>

CSS

.tabs {
    padding-top: 0.5em;
    padding-bottom: 1em;
    padding-right: 40px;
}

.tabs > ul {
    display: flex;
    justify-content: space-between;
}

.tabs > ul > li {
    position: relative;
    display: inline-block;
    background: #eeeeee;
    padding: 1em 1em 1em 2em;
    line-height: 1.25em;
    color: #ffffff;
}

.tabs > ul > li > a {
    color: #ffffff;
    font-family: Lato-Regular;
    font-size: 1.2em;
}

.tabs > ul > li:after {
    position: absolute;
    content: " ";
    height: 0;
    width: 0;
    top: 0;
    left: 100%;
    border: 1.65em solid transparent;
    z-index: 1;
}

.tabs > ul > li:before {
    position: absolute;
    content: "";
    height: 0;
    width: 0;
    top: -3px;
    left: 101%;
    border-width: 1.85em 1.65em 1.85em 1.85em;
    border-style: solid;
    border-color: transparent transparent transparent #fff;
    z-index: 1;
}

.tabs > ul > li:nth-child(1):after {
  border-left-color: red; }

.tabs > ul > li:nth-child(1) {
  background: red; }

.tabs > ul > li:nth-child(2):after {
  border-left-color: orange; }

.tabs > ul > li:nth-child(2) {
  background: orange; }

.tabs > ul > li:nth-child(3):after {
  border-left-color: gray; }

.tabs > ul > li:nth-child(3) {
  background: gray; }

.tabs > ul > li:nth-child(4):after {
  border-left-color: deepskyblue; }

.tabs > ul > li:nth-child(4) {
  background: deepskyblue; }

.tabs > ul > li:nth-child(5):after {
  border-left-color: blue; }

.tabs > ul > li:nth-child(5) {
  background: blue; }

.tabs > ul > li:nth-child(6):after {
  border-left-color: purple; }

.tabs > ul > li:nth-child(6) {
  background: purple; }

.tabs > ul > li:nth-child(7):after {
  border-left-color: green; }

.tabs > ul > li:nth-child(7) {
  background: green; }