.flex {
    display: flex;
    align-items: center;
    /* justify-content: center; */
  }
  
  .app-btn {
    width: 45%;
    max-width: 160px;
    color: #fff;
    margin: 20px 10px;
    text-align: left;
    border-radius: 5px;
    text-decoration: none;
    font-size: 10px;
    text-transform: uppercase;
  }
  .app-btn.blu {
    background-color: #101010;
    transition: background-color 0.25s linear;
  }
  .app-btn.blu:hover {
    background-color: rgb(228, 228, 228);
    color: #000;
  }
  .app-btn i {
    width: 20%;
    text-align: center;
    font-size: 28px;
    margin-right: 7px;
  }
  .app-btn .big-txt {
    font-size: 16px;
    text-transform: capitalize;
  }