纯CSS多叠位置粘？

Question

是否可以在纯 CSS 中将多个粘性元素堆叠在一起？

可以在此处看到所需的行为： https://webthemez.com/demo/sticky-multi-header-scroll/index.html

只是我更愿意使用纯 CSS，而不是 Javascript 实现。我对多个粘性元素进行了一些试验，但我无法阻止它们推出其他粘性元素。我试过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;
}

但无法正常工作，如下所示。任何见解将不胜感激！

#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>
  <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>
  <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

您需要通过添加一些偏移量使所有元素粘附在同一个容器 （包含块）。

这是一个基本示例，其中元素将粘附在主体上：

body {
  margin:0;
  min-height:200vh;
  border:2px solid;
}
.first {
  height:50px;
  background:red;
  position:sticky;
  top:0;
}

.second {
  height:50px;
  background:blue;
  position:sticky;
  top:52px;
}
.third {
  height:50px;
  background:green;
  position:sticky;
  top:104px;
}

<div class="first"></div>
<p>lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum</p>
<div class="second"></div>
<p>lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum</p>
<div class="third"></div>
<p>lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum</p>

如果它们在不同的容器中，它将不起作用：

body {
  margin: 0;
  min-height: 300vh;
}
body > div {
  border:2px solid;
}

.first {
  height: 50px;
  background: red;
  position: sticky;
  top: 0;
}

.second {
  height: 50px;
  background: blue;
  position: sticky;
  top: 52px;
}

.third {
  height: 50px;
  background: green;
  position: sticky;
  top: 104px;
}

<div>
  <div class="first"></div>
  <p>lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum
    lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum</p>
</div>
<div>
  <div class="second"></div>
  <p>lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum
    lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum</p>
</div>
<div>
  <div class="third"></div>
  <p>lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum
    lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum</p>
</div>

A stickily positioned element is an element whose computed position value is sticky. It's treated as relatively positioned until its containing block crosses a specified threshold (such as setting top to value other than auto) within its flow root (or the container it scrolls within), at which point it is treated as "stuck" until meeting the opposite edge of its containing block ^ref

这里最重要的部分是最后一个。因此，如果所有元素不在同一个容器中，每个元素都会到达其容器的边缘，粘性行为将停在那里。请注意，在最后一个示例中，每个元素如何在到达其包含块

的 bottom-border 时停止移动

相关问题获取更多details/examples：

Why element with position:sticky doesn't stick to the bottom of parent?

Answer 2

您需要做的就是将具有 position:sticky 的元素相互嵌套。然后将 top:2em 递增设置为后续粘性 headers。你的笔包含两列，所以我假设你需要两列 scroll-boxes，因此是长代码片段。

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>

您可以找到此代码作为笔here。

希望这个回答对您有所帮助。

和平

纯CSS多叠位置粘？

pure CSS multiple stacked position sticky?

css

css-position

sticky