Edit in JSFiddle

<div class="row">
  <div class="col">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Repudiandae facilis quo reprehenderit, minus vero dolor aut officia asperiores tenetur quasi voluptatibus quisquam culpa sit totam, libero accusamus nobis corporis, id.
  </div>
  <div class="col">
    Lorem ipsum dolor sit amet, consectetur a
  </div>
  <div class="col">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Repudiandae facilis quo reprehenderit, minus vero dolor aut officia asperiores
  </div>
</div>
.row {
  display: flex;
}

.col {
  width: 33.3333%;
  border: 1px solid #000;
}