JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/1.5.2/semantic.min.css">
<div class="ui masthead segment">
        <div class="ui vertically padded grid">
              <!-- Side Menu -->
             <div class="two wide column">
                <div class="ui one column grid">
                    <div class="one column row">
                         <div class="purple column"></div>
                    </div>
                    <div class="one column row">
                         <div class="pink column"></div>
                    </div>
                    <div class="one column purple row">
                      <div class="column">
                        <div class="ui vertical pointing menu">
                          <div class="header item">HEADER</div>
                          <a class="active item">
                            
                            <i class="home icon"></i> Item 1
                          </a>
                          <a class="item">
                            <i class="mail icon"></i> Item 2
                          </a>
                          <a class="item">
                            <i class="user icon"></i> Item 3
                          </a>
                          <a class="item">
                            <i class="user icon"></i> Item 4
                          </a>
                          <a class="item">
                            <i class="user icon"></i> Item 5
                          </a>
                          <a class="item">
                            <i class="user icon"></i> Item 6
                          </a>
                          <a class="item">
                            <i class="user icon"></i> Item 7
                          </a>

                         
                        </div>
                      </div>
                    </div>
                </div>
             </div>
         
              <!- Header / Main Content...