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.

z指数也很重要。有时候它会起作用，只是你看不到而已。试着把它设置为一个非常高的数字，只是为了确定。也不要总是放top: 0，而是尝试一些更高的，以防它被隐藏在某个地方(在工具栏下面)。

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。

1.如果overflow在元素的任何父元素上设置为hidden、scroll或auto，位置粘滞很可能不起作用。

2.如果任何父元素都设置了高度，位置粘滞可能无法正常工作。

从我的评论来看:

位置:粘需要一个坐标来确定粘的位置

nav { position: sticky; top: 0; } .nav-selections { text-transform: uppercase; letter-spacing: 5px; font: 18px "lato", sans-serif; display: inline-block; text-decoration: none; color: white; padding: 18px; float: right; margin-left: 50px; transition: 1.5s; } .nav-selections:hover { transition: 1.5s; color: black; } ul { background-color: #B79b58; overflow: auto; } li { list-style-type: none; } body { height: 200vh; } <nav> <ul align="left"> <li><a href="#/contact" class="nav-selections" style="margin-right:35px;">Contact</a></li> <li><a href="#/about" class="nav-selections">About</a></li> <li><a href="#/products" class="nav-selections">Products</a></li> <li><a href="#" class="nav-selections">Home</a></li> </ul> </nav>

除了FF和Chrome，其他浏览器也可以使用polyfill。这是一个实验性的规则，可以通过浏览器随时实现，也可以不实现。Chrome在几年前添加了它，然后删除了它，它似乎回来了…但能持续多久呢?

最接近的是position:relative +坐标，当滚动到达粘性点时更新，如果你想将其转换为javascript脚本

另一个position: sticky不能工作的常见场景是，如果它的父类有display: flex或display: grid。

在这种情况下发生的是粘性位置在工作，但你看不到它，因为元素被完全拉伸了。尝试使用align-self: baseline降低它的高度，你会看到效果。