<ul class="items">
  <li>アイテム</li>
  <li>アイテム</li>
  <li>アイテム</li>
</ul>
.items {
  display: flex;
  justify-content: flex-end;
}

.items li {
  margin-right: 10px;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.