<p>This <code>&lt;select&gt;</code> allows users to select one option.</p>

<select name="name" required>
 <option value="1">John</option>
 <option value="2">Jane</option>
 <option value="3">Donald</option>
 <option value="4">Chuck</option>
 <option value="5">Leslie</option>
</select>

<p>This <code>&lt;select&gt;</code> allows users to press <strong>command</strong> or <strong>ctrl</strong> to select multiple options.</p>

<select multiple name="name" required>
 <option value="1">John</option>
 <option value="2">Jane</option>
 <option value="3">Donald</option>
 <option value="4">Chuck</option>
 <option value="5">Leslie</option>
</select>

select {
  max-width: 300px;
  width: 100%;
  padding: 6px;
  margin: 10px 0px 40px;
  font-size: 1rem;
}