纯CSS的多个堆叠位置有粘性吗? [英] pure CSS multiple stacked position sticky?

问题描述

在纯CSS中是否可以将多个粘性元素彼此堆叠?

Is it possible to have multiple sticky elements stacked on top of each other in pure CSS?

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

The desired behavior can be seen here: https://webthemez.com/demo/sticky-multi-header-scroll/index.html

只有我更喜欢使用纯CSS，而不是Javascript实现.我已经对多个粘性元素进行了一些实验，但是不能阻止它们推出其他粘性元素.我试过将它们放在相同的堆栈上下文中:

Only I'd prefer to use pure CSS, instead of a Javascript implementation. I've experimented a bit with multiple sticky elements, but I can't keep them from pushing out other sticky elements. I've tried placing them in the same stacking context:

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

但是无法正常工作，如下所示.任何见解将不胜感激！

But can't get it to work, as you can see in below . Any insights would be greatly appreciated!

#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>

推荐答案

您需要通过添加以下内容使所有元素坚持使用相同的容器 (包含代码块)一些抵消.

You need to make all the elements to stick to the same container (containing block) by adding some offsets.

这是一个基本示例，其中元素将粘在身上:

Here is a basic example where the elements will stick to the body:

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>

如果它们位于不同的容器中，则将不起作用:

It will not work if they are in different containers:

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>

粘性定位元素是其计算出的位置值为粘性的元素.它被视为相对定位，直到其包含的块在其流根(或在其中滚动的容器)内超过指定的阈值(例如，将top设置为auto以外的值)，此时将其视为卡住" 直到遇到其包含块的相反边缘 ^ref

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部分.因此，如果所有元素不在同一个容器中，则每个元素都将到达其容器的边缘，并且粘滞行为将在那里停止.请注意，在最后一个示例中，每个元素到达其包含块的bottom-border时将如何停止移动

The most important part here is the last one. So if all the elements aren't in the same container each one will reach the edge of its container and the sticky behavior will stop there. Note how, in the last example, each element will stop moving when reaching the bottom-border of its containing block

相关问题以获取更多详细信息/示例:

Related questions to get more details/examples:

为什么位置为:sticky的元素不会停留在父对象的底部?

位置:粘性"在定义高度"时不起作用

如何创建不同级别的粘性标头?

这篇关于纯CSS的多个堆叠位置有粘性吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！