<div class="wrapper">
  <p class="text">
    Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
  </p>
</div>

.wrapper {
  display: flex;
  justify-content: flex-end;
  width: 500px;
  background-color: #e0e0e0;
}

.text {
  width: 300px;
}