<div class="box">You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. You wish you could see this text. </div>

.box {
  margin: 50px auto;
  color: blue;
  width: 400px;
  column-count: 2;
  column-width: 150px;
  column-gap: 20px;
  column-rule: 400px solid blue;
}