JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="app.css">
    <title>Zadatak</title>
</head>
<body>

    <div class="header">
        <ul>
            <li>ITEM 1</li>
            <li>ITEM 2</li>
            <li>ITEM 3</li>
            <li>ITEM 4</li>
            <li>ITEM 5</li>
        </ul>
    </div>

    <div class="vertical-menu">
        <ul>
            <li>ITEM 1</li>
            <li>ITEM 2</li>
            <li>ITEM 3</li>
            <li>ITEM 4</li>
            <li>ITEM 5</li>
        </ul>
    </div>

    <div class="footer">
        <ul>
            <li>ITEM 1</li>
            <li>ITEM 2</li>
            <li>ITEM 3</li>
            <li>ITEM 4</li>
            <li>ITEM 5</li>
        </ul>
    </div>
    
</body>
</html>

CSS

body {
  margin: 0;
  padding: 0;
  margin-bottom: 50px;
  background: #ccc;
  font-family: Arial;
}
.header ul {
  padding: 0;
  margin: 0;
  text-align: center;
  background: #2b3b75;
}
.header li {
  display: inline-block;
  color: #fff;
  width: 100px;
  height: 50px;
  line-height: 50px;
  font-size: 15px;
  font-weight: bold;
}
.header li:hover {
  background: #3d53a3;
}
.vertical-menu {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  right: 0px;
}
.vertical-menu ul {
  padding: 0;
  margin: 0;
  text-align: center;
  background: #2b3b75;
}
.vertical-menu li {
  display: block;
  color: #fff;
  width: 100px;
  height: 50px;
  line-height: 50px;
  font-size: 15px;
  font-weight: bold;
}
.vertical-menu li:hover {
  background: #3d53a3;
}
.footer {
  position: fixed;
  height: 50px;
  bottom: 0px;
  left: 0px;
  right: 0px;
  margin-bottom: 0px;
}
.footer ul {
  padding: 0;
  margin: 0;
  text-align: center;
  background: #424242;
}
.footer li {
  display: inline-block;
  color: #fff;
  width: 100px;
  height: 50px;
  line-height: 50px;
  font-size: 15px;
  font-weight: bold;
}
.footer li:hover {
  background: #646464;
}