纯CSS多层堆叠位置粘性？

Question

在纯CSS中，可以将多个粘性元素堆叠在一起吗？

所需的行为可以在这里看到：https://webthemez.com/demo/sticky-multi-header-scroll/index.html

只是我更喜欢使用纯CSS，而不是Javascript实现。我对多个粘性元素进行了一些实验，但我无法阻止它们推出其他粘性元素。我尝试将它们放在相同的堆叠上下文中：

#sticky .sticky-1,
#sticky .sticky-2
{
  position: sticky;
}
#sticky .sticky-1
{
  top: 1em;
  z-index: 1;
}
#sticky .sticky-2
{
  top: 2em;
  z-index: 1;
}

但是不能让它工作，正如你在下面看到的。如果有任何见解，我们将不胜感激！

​

#container
{
  display: grid;
  grid-template-columns: 50% 50%;
}
#sticky .sticky-1,
#sticky .sticky-2
{
  position: sticky;
}
#sticky .sticky-1
{
  top: 1em;
  z-index: 1;
}
#sticky .sticky-2
{
  top: 2em;
  z-index: 1;
}
#fixed
{
  position: relative;
}
#fixed .sticky-1
{
  position: fixed;
  top: 0;
}
#fixed .sticky-2
{
  position: fixed;
  top: 1em;
}

<div id="container">
<article id="sticky">
  <header>
  
  </header>
  <main><h1 class="sticky-1">Sticky heading</h1>
  <p>here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. </p>
    </main>
    <section>
  <h2 class="sticky-2">Both headings should stick at the same time.</h2>
/*
* 提示：该行代码过长，系统自动注释不进行高亮。一键复制会移除系统注释 
* <p> And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. 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*/
      </section>
</article>
  <article id="fixed">
  <header>
  
  </header>
  <main><h1 class="sticky-1">Fixed heading</h1>
  <p>Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. oes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. Some copy goes here. </p>
    </main>
    <section>
  <h2 class="sticky-2">Another fixed to show how they should stick.</h2>
/*
* 提示：该行代码过长，系统自动注释不进行高亮。一键复制会移除系统注释 
* <p>And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. And finally a little more copy. 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And finally a little more copy. And finally a little more copy. And finally a little more copy. </p>
*/
      </section>
</article>
</div>

​

Answer 1

您所需要做的就是保持元素与position:sticky之间的嵌套。然后递增地将top:2em设置为随后的粘性报头。您的笔包含两列，因此我假设您需要两个滚动框，因此出现了较长的代码片段。

​

body {
  display: flex;
  flex-direction: row;
  margin: 0;
  padding: 0;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: #222;
}

.mainParent {
  height: 90%;
  width: 80%;
  background: rgba(222, 222, 222, 0.10);
  color: #ddd;
  overflow-y: scroll;
  border: 4px solid #ddd;
}

.mainParent {
  margin: 0.5em
}

.header {
  position: sticky;
  padding: 0.5em;
  background: #ddd;
  color: #222;
  text-align: center;
}

#header01 {
  top: 0;
}

#header02 {
  top: 2em;
}

#header03 {
  top: 4em;
}

#header04 {
  top: 6em;
}

#header05 {
  top: 8em;
}

.content {
  text-align: center
}

<div class="mainParent">
  <div class="header" id="header01">Header 01</div>
  <div id="content01" class="content">
    <br><br><br><br><br><br><br><br><br><br><br><br>
    <br><br><br><br><br><br><br><br><br>Content 1-1<br><br>
    <div class="header" id="header02">Header 02</div>
    <div id="content02" class="content">
      <br><br><br><br><br><br><br><br><br><br><br><br>
      <br><br><br><br><br><br><br><br><br>Content 1-2<br><br>
      <div class="header" id="header03">Header 03</div>
      <div id="content03" class="content">
        <br><br><br><br><br><br><br><br><br><br><br><br>
        <br><br><br><br><br><br><br><br><br>Content 1-3<br><br>
        <div class="header" id="header04">Header 04</div>
        <div id="content04" class="content">
          <br><br><br><br><br><br><br><br><br><br><br><br>
          <br><br><br><br><br><br><br><br><br>Content 1-4<br><br>
          <div class="header" id="header05">Header 05</div>
          <div id="content05" class="content">
              <br><br><br><br><br><br><br><br><br><br><br><br>
              <br><br><br><br><br><br><br><br><br>Peace &#128406;
          </div>
        </div>
      </div>
    </div>
  </div>
</div>
<div class="mainParent">
  <div class="header" id="header01">Header 01</div>
  <div id="content01" class="content">
    <br><br><br><br><br><br><br><br><br><br><br><br>
    <br><br><br><br><br><br><br><br><br>Content 2-1<br><br>
    <div class="header" id="header02">Header 02</div>
    <div id="content02" class="content">
      <br><br><br><br><br><br><br><br><br><br><br><br>
      <br><br><br><br><br><br><br><br><br>Content 2-2<br><br>
      <div class="header" id="header03">Header 03</div>
      <div id="content03" class="content">
        <br><br><br><br><br><br><br><br><br><br><br><br>
        <br><br><br><br><br><br><br><br><br>Content 2-3<br><br>
        <div class="header" id="header04">Header 04</div>
        <div id="content04" class="content">
          <br><br><br><br><br><br><br><br><br><br><br><br>
          <br><br><br><br><br><br><br><br><br>Content 2-4<br><br>
          <div class="header" id="header05">Header 05</div>
          <div id="content05" class="content">
              <br><br><br><br><br><br><br><br><br><br><br><br>
              <br><br><br><br><br><br><br><br><br>Peace &#128406;
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>

​

您可以在pen here中找到此代码。

我希望这个答案能帮助你。

和平