* {
    box-sizing: border-box;
  }
  a {
    text-decoration: none;
    color: #fff;
  }
  h2 {
    text-align: center;
    color: #777;
  }
  .flex-container1, .flex-container2, .flex-container3, .flex-container4, .flex-container5 {
    display: flex;
    flex-direction: row;
    font-size: 30px;
    text-align: center;
    margin: 5px;
    padding: 5px;
  }
  
  .flex-item {
    background-color: #999;
    padding: 10px;
    flex: 50%;
    margin: 5px;
    border-radius: 20px;
    font-size: 1.5rem;
  }

  
  /* Responsive layout - makes a one column-layout instead of two-column layout */
  @media (max-width: 800px) {
    .flex-container1, .flex-container2, .flex-container3, .flex-container4, .flex-container5 {
      flex-direction: column;
    }
  }