创建具有左对齐和右对齐元素的自定义导航栏

<nav class="custom-navbar">
  <div class="left-align">
    <a href="#">左对齐元素1</a>
    <a href="#">左对齐元素2</a>
  </div>
  <div class="right-align">
    <a href="#">右对齐元素1</a>
    <a href="#">右对齐元素2</a>
  </div>
</nav>

.custom-navbar {
  display: flex;
  justify-content: space-between;
  background-color: #f2f2f2;
  padding: 10px;
}

.left-align {
  display: flex;
  align-items: center;
}

.right-align {
  display: flex;
  align-items: center;
}

.custom-navbar a {
  margin-right: 10px;
  text-decoration: none;
  color: #333;
}