<div class="container">
  <div class="item">
    <div class="item__content">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. In accumsan nunc id felis cursus</p>
      <ul>
        <li>test 1</li>
        <li>test 2</li>
        <li>test 3</li>
        <li>test 4</li>
      </ul>
    </div>
  </div>
  <div class="item">
    <div class="item__content">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. In accumsan nunc id felis cursus</p>
      <ul>
        <li>test 1</li>
        <li>test 4</li>
        <li>test 5</li>
      </ul>
    </div>
  </div>
  <div class="item">
    <div class="item__content">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. In accumsan nunc id felis cursus</p>
      <ul>
        <li>test 1</li>
        <li>test 2</li>
        <li>test 3</li>
        <li>test 4</li>
        <li>test 5</li>
        <li>test 4</li>
        <li>test 5</li>
      </ul>
    </div>
  </div>
  <div class="item">
    <div class="item__content">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. In accumsan nunc id felis cursus</p>
      <ul>
        <li>test 1</li>
        <li>test 2</li>
        <li>test 3</li>
        <li>test 4</li>
        <li>test 5</li>
      </ul>
    </div>
  </div>
  <div class="item">
    <div class="item__content">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. In accumsan nunc id felis cursus</p>
      <ul>
        <li>test 1</li>
        <li>test 2</li>
        <li>test 3</li>
      </ul>
    </div>
  </div>
</div>

html, body {
  background-color: #DEDFE1;
}

body {
  padding: 8px;
}

.container {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  
  // just to mave more attractive view
  max-width: 1280px;
  border: 1px solid black;
  border-radius: 3px;
}

.item {
  box-sizing: border-box;
  width: 33%;
  padding: 10px;
  
  &__content {
    background-color: #CECFD3;
    padding: 5px 10px;
    height: 100%;
  }
}