JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
  <li><a href="">Home</a></li>
  <li><a href="">About</a></li>
</ul>

CSS

* {
 box-sizing: border-box;
}
body {
  padding: 0;
  margin:0;
}
ul {
  display: flex;
  width: 100%;
  flex-direction: row;
  gap: 20px;
  background: #000;
  padding: 0 10px;
  justify-content: flex-end;
}

li {
  list-style-type: none;
  clip-path: polygon(20% 0%, 100% 0, 80% 100%, 0% 100%);
  background: blue;
  padding: 10px 50px;
}
a {
  color: #fff;
}