我想用一种优雅的方式在用户滚动时在窗口顶部“收集”多级标题,而position:sticky可以让我90%地到达那里。以下代码段的工作方式与我想要的一样,但有一个例外:标题2b到达顶部时,标题3b仍然可见。由于标题3b是标题2a的“子项”,因此我希望标题2b到达顶部后,滚动标题或将其隐藏。 (可以预料,标题1b和标题2d都有相同的问题。)

我知道我在这里拥有CSS的工作方式,但是是否有一种优雅的方法可以使其按我的要求工作?我曾尝试给p一个background-color一个white并弄乱了z-index,但是我没有任何运气。



h1, h2, h3 {
  position: -webkit-sticky;
  position: sticky;
  top: 0px;
}

h1 {
  background-color: red;
  height: 35px;
}
h2 {
  background-color: blue;
  height: 25px;
  top: 35px;
}
h3 {
  background-color: green;
  height: 20px;
  top: 60px;
}

<h1>Header 1a</h1>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h2>Header 2a</h2>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3a</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3b</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h2>Header 2b</h2>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3c</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3d</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h1>Header 1b</h1>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h2>Header 2c</h2>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3e</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3f</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h2>Header 2d</h2>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3g</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
<h3>Header 3h</h3>
<p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>

最佳答案

我认为执行此操作的逻辑方法是考虑嵌套div,如下所示:



h1,
h2,
h3 {
  position: -webkit-sticky;
  position: sticky;
  top: 0px;
  margin:0;
}

h1 {
  background-color: red;
  height: 35px;
  z-index:3;
}

h2 {
  background-color: blue;
  height: 25px;
  top:35px;
  z-index:2;
}

h3 {
  background-color: green;
  height: 20px;
  top:60px;
  z-index:1;
}

<div>
  <h1>Header 1a</h1>
  <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
  <div>
    <h2>Header 2a</h2>
    <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    <div>
      <h3>Header 3a</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
      <h3>Header 3b</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    </div>
  </div>
  <div>
    <h2>Header 2b</h2>
    <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    <div>
      <h3>Header 3c</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
      <h3>Header 3d</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    </div>
  </div>
</div>
<div>
  <h1>Header 1b</h1>
  <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
  <div>
    <h2>Header 2c</h2>
    <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    <div>
      <h3>Header 3e</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
      <h3>Header 3f</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    </div>
  </div>
  <div>
    <h2>Header 2d</h2>
    <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    <div>
      <h3>Header 3g</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
      <h3>Header 3h</h3>
      <p>Lorem ipsum dolor sit amet, no qui quis eloquentiam.</p>
    </div>
  </div>
</div>

10-05 20:39
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