我还遇到了一些事情:

当你的sticky元素是一个组件时(angular等)

如果“sticky”元素本身是一个带有自定义元素选择器的组件，比如一个名为<app-menu-bar>的angular组件，你需要在该组件的css中添加以下内容: :主机{显示:块;} //或使用flexbox

or

    app-menu-bar  { display: block; }   // (in the containing component's css)

Safari on iOS in particular seems to require `display:block` even on the root element `app-root` of an angular application or it won't stick.

If you are creating a component and defining the css inside the component (shadow DOM / encapsulated styles), make sure the position: sticky is being applied to the 'outer' selector (eg. app-menu-bar in devtools should show the sticky position) and not a top level div within the component. With Angular, this can be achieved with the :host selector in the css for your component. :host { position: sticky; display: block; // this is the same as shown above top: 0; background: red; }

其他

If the element following your sticky element has a solid background, you must add the following to stop it from sliding underneath: .sticky-element { z-index: 100; } .parent-of-sticky-element { position: relative; } Your sticky element must be before your content if using top and after it if using bottom. There are complications when using overflow: hidden on your wrapper element – in general it will kill the sticky element inside. Better explained in this question Mobile browsers may disable sticky/fixed positioned items when the onscreen keyboard is visible. I'm not sure of the exact rules (does anybody ever know) but when the keyboard is visible you're looking at a sort of 'window' into the window and you won't easily be able to get things to stick to the actual visible top of the screen. Make sure you have: position: sticky; and not display: sticky;

杂项可用性问题

Be cautious if your design calls for for sticking things to the bottom of the screen on mobile devices. On iPhone X for instance they display a narrow line to indicate the swipe region (to get back to the homepage) - and elements inside this region aren't clickable. So if you stick something there be sure to test on iPhone X that users can activate it. A big 'Buy Now' button is no good if people can't click it! If you're advertising on Facebook the webpage is displayed in a 'webview' control within Facebook's mobile apps. Especially when displaying video (where your content begins in the bottom half of the screen only) - they often completely mess up sticky elements by putting your page within a scrollable viewport that actually allows your sticky elements to disappear off the top of the page. Be sure to test in the context of an actual ad and not just in the phone's browser or even Facebook's browser which can all behave differently.

检查祖先元素是否有溢出集(例如overflow:hidden);试着切换它。您可能需要检查DOM树的位置高于您的预期=)。

这可能会影响你的位置:粘在一个后代元素上。

我知道这个问题似乎已经有了答案，但我遇到了一个具体的案例，我觉得大多数答案都没有抓住重点。

溢出:隐藏答案覆盖了90%的情况。这或多或少是“粘性导航”的情况。

但是粘性行为最好在容器高度内使用。想象一下，在你网站的右栏中，有一个新闻简报的形式，它可以随着页面向下滚动。 如果sticky元素是容器的唯一子元素，那么容器的大小是完全相同的，并且没有滚动的空间。

你的容器需要是你期望元素滚动的高度。在右列的情况下就是左列的高度。 实现这一点的最佳方法是在列上使用display:table-cell。如果你不能，并且像我一样被float:right困住了，你必须要么猜左列的高度，要么用Javascript计算它。

如果danday74的修复不起作用，检查父元素是否有一个高度。

在我的情况下，我有两个孩子，一个漂浮在左边，一个漂浮在右边。 我想要右边的浮动一个变得粘性，但必须添加一个<div style="clear: both;"></div>在父元素的末尾，赋予它高度。

溢出需要被移除或设置为initial来创建位置，这是TRUE: sticky作用于子元素。我在我的Angular应用中使用了材质设计，发现一些材质组件改变了溢出值。我的解决方案是

mat-sidenav-container, mat-sidenav-content {
  overflow: initial;
}

// Sticky Code

const stickyItem = document.querySelector(".item- made-sticky")

document.addEventListener（“scroll”， （） => { stickyItem.style.transform = translateY（${window.scrollY}px） })