We can make use of this functionality and because CSS skips over style declarations it doesn’t understand, we can implement fallbacks for all of these possible ntainer px` One of these keywords is stretch which formerly was known as fill, fill-available, and its prefixed spin-offs -moz-available and -webkit-fill-available. This allows CSS to more easily describe boxes that fit their content or fit into a particular layout context. Intrinsic and extrinsic sizing is a new CSS functionality that extends the sizing properties with keywords that represent content-based »intrinsic« sizes and context-based »extrinsic« sizes. And that may have been the motivation why you wanted to use 100vh in the first place. However, if your element is nested somewhere in the DOM, this may not work out (as 100% will be relative to the parent elements which are only as tall as the content they contain). 100%ĭepending on your use case, it may be enough to simply use 100% instead of 100vh, especially for fixed/sticky elements (as 100% will be relative to the »real« viewport). How do we go on from this? There’s a couple of solutions. Luckily, this doesn't have to be the most depresssing answer ever. So, it’s not a bug-and no fix is planned for this. Most website using viewport units were looking great most of the time. It is hard to show you the "looks like shit" part, but imagine as you scroll, the contents moves and what you want on screen is continuously shifting.ĭynamically updating the height was not working, we had a few choices: drop viewport units on iOS, match the document size like before iOS 8, use the small view size, use the large view size.įrom the data we had, using the larger view size was the best compromise. Not only that looks like shit, but doing that at 60 FPS is practically impossible in most pages (60 FPS is the baseline framerate on iOS).
Where is safari toolbar update#
If we update the CSS viewport height accordingly, we need to update the layout during the scroll. The base problem is this: the visible area changes dynamically as you scroll. It took quite a bit of work on our part to achieve this effect.
This is a well-known issue and unfortunately intentional, as it prevents other problems, as Benjamin Poulain explained in his reply to a WebKit bug ticket regarding this issue. The container spans between the top address bar and the bottom navigation bar. In the right screenshot, you can see how one would expect the layout to be. your content is below the »fold«-although you may have expected that it’s not part of the viewport.
Where is safari toolbar full#
This should span accross the full viewport, right? Well, in the left screenshot below, you can see that in iOS Safari the bottom navigation bar actually overlaps your content, i.e. Height: 100vh /* This is where it gets interesting */ You may have something similar in your project, such as a fullscreen modal/lightbox with a header/footer. container) with a width of 100vw and a height of 100vh. These boxes are wrapped within an element (. It’s a simple page with 2 absolutely positioned boxes in the top left corner (.
First of all, let’s have a look at the issue by checking out the following example.