JSFiddle - React, Tailwind, and code Playground

HTML

<div class="content">
  <div class="header">
    <h1>Title</h1>
    <hr>
  </div>
  <div class="menu">
    <ul>
      <li><a class="active" href="#home">Home</a></li>
      <li><a href="#news">Projecten</a></li>
      <li><a href="#contact">Contact</a></li>

    </ul>

  </div>


  <div class="inleiding">
    <img src="https://cdn3.iconfinder.com/data/icons/rcons-user-action/32/boy-512.png">
    <div class="tekstinleiding">
      <h2>"Title"</h2>
      <hr>

      <p>
        "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor
        in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
      </p>
    </div>

  </div>

  <div class="copyright">
    <p>&copy; All rights reserved | Title </p>
  </div>

CSS

@import url('https://fonts.googleapis.com/css?family=Roboto+Condensed');
html {
  height: 100%;
}

body {
  width: 70%;
  height: 100%;
  margin-top: 0;
  margin-left: auto;
  margin-right: auto;
}

.header {
  font-family: 'Roboto Condensed', sans-serif;
  font-size: 30px;
  margin-bottom: 0;
}

.header hr {
  margin-top: 0;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

li {
  font-family: 'Roboto Condensed', sans-serif;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover {
  background-color: #111;
}

.active {
  background-color: #111;
}

img {
  float: left;
  height: 100%;
  max-width: 50%;
  border-top: 5px solid black;
}

h1 {
  margin: 0;
  padding: 0;
}

.inleiding {
  background-color: #D0D0D0;
  width: 100%;
  height: 50%;
  margin-top: 50px;
  box-shadow: 10px 10px 5px #888888;
  font-family: 'Roboto Condensed', sans-serif;
  border-bottom: 5px solid black;
}


.tekstinleiding p {
  width: 45%;
  /** changes start here **/
  height: 50%;
  display: inline-block; 
  /** changes end here **/
  margin-right: 5%;
  color: white;
  font-size: 20px;
}

.tekstinleiding h2 {
  padding-top: 30px;
  text-align: center;
  font-size: 190%;
}

.copyright {
  font-size: 20px;
  color: white;
  width: 100%;
  text-align: center;
  background-color: #333;
  margin-top: 16.5%;
  font-family: 'Roboto Condensed', sans-serif;
}