JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
  <li>
    <div class="item">
      <strong>My Label</strong>
       <p class="text">My text here</p>      
    </div>
  </li>
  <li>
    <div class="item">
      <strong>My Label</strong>
       <p class="text">My text here</p>      
    </div>
    
    <div class="item">
      <strong>My Label</strong>
       <p class="text">My text here</p>      
    </div>
    <div class="item">
      <strong>My Label</strong>
       <p class="text">My text here</p>      
    </div>    
  </li>
</ul>

CSS

ul {
  padding-top: 8px;
  padding-left: 0px;
  margin: 0;
  list-style: none;
  border-top: 2px solid #000000;
  display: block;
  width: 99%;
  display: flex;
}

li {
  flex: 1 0 50%;
  margin-bottom: 4px;
  display: flex;
  flex-direction: column;
}

.item {
  display: flex;
  margin-bottom: 10px;
}

.item strong {
  flex: 4;
  white-space: nowrap;
}

.item strong::after {
  content: ':';
}

.item .text {
  flex: 6;
  padding: 0;
  margin: 0;
}