search
HomeWeb Front-endCSS TutorialWhy Does My Full-Screen Background Image Jump on Mobile Chrome When the Address Bar Hides?

Why Does My Full-Screen Background Image Jump on Mobile Chrome When the Address Bar Hides?

Background Image Offset on Address Bar Hide in iOS/Android/Mobile Chrome

Issue

When developing a responsive website using CSS, including a full-screen background image that rotates and fades between two divs, an unexpected behavior occurs: the background image jumps slightly when scrolling down on iOS Safari, Android Browser, or Android Chrome. This is caused by the address bar hiding and consequently adjusting the size of the background divs, which are fixed and set to 100% height.

Solution

To resolve this issue, two possible solutions exist:

  1. Set #bg1 and #bg2 height to 100vh: This solution is theoretically elegant, using the viewport height to set the appropriate height. However, iOS has a vh bug that affects this solution.
  2. Use JavaScript to set a static height: The viewport size, when determined by JavaScript, is unaffected by the address bar. Thus, JavaScript can set a static height for the background divs based on the viewport size. This is not an ideal solution due to its non-pure CSS nature and a slight image jump on page load, but it is viable considering iOS's vh bugs.

Using the following JavaScript code will adjust the background height dynamically:

var bg = $("#bg1, #bg2");

function resizeBackground() {
    bg.height($(window).height());
}

$(window).resize(resizeBackground);
resizeBackground();

Additional Considerations

While the above solution effectively prevents background resizing, it may cause a noticeable gap when users scroll down. This gap results from matching the background height to the screen minus the URL bar height. By adding 60px to the height, this issue can be resolved, but it means the bottom 60px of the background image won't be visible when the URL bar is present:

function resizeBackground() {
    bg.height( $(window).height() + 60);
}

It's worth noting that these resizing URL bars in iOS and Android have raised concerns due to their impact on website functionality. Although their purpose is understood, their behavior can cause unexpected challenges in CSS-based designs.

The above is the detailed content of Why Does My Full-Screen Background Image Jump on Mobile Chrome When the Address Bar Hides?. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
A Little Reminder That Pseudo Elements are Children, Kinda.A Little Reminder That Pseudo Elements are Children, Kinda.Apr 19, 2025 am 11:39 AM

Here's a container with some child elements:

Menus with 'Dynamic Hit Areas'Menus with 'Dynamic Hit Areas'Apr 19, 2025 am 11:37 AM

Flyout menus! The second you need to implement a menu that uses a hover event to display more menu items, you're in tricky territory. For one, they should

Improving Video Accessibility with WebVTTImproving Video Accessibility with WebVTTApr 19, 2025 am 11:27 AM

"The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect."- Tim Berners-Lee

Weekly Platform News: CSS ::marker pseudo-element, pre-rendering web components, adding Webmention to your siteWeekly Platform News: CSS ::marker pseudo-element, pre-rendering web components, adding Webmention to your siteApr 19, 2025 am 11:25 AM

In this week's roundup: datepickers are giving keyboard users headaches, a new web component compiler that helps fight FOUC, we finally get our hands on styling list item markers, and four steps to getting webmentions on your site.

Making width and flexible items play nice togetherMaking width and flexible items play nice togetherApr 19, 2025 am 11:23 AM

The short answer: flex-shrink and flex-basis are probably what you’re lookin’ for.

Position Sticky and Table HeadersPosition Sticky and Table HeadersApr 19, 2025 am 11:21 AM

You can't position: sticky; a

Weekly Platform News: HTML Inspection in Search Console, Global Scope of Scripts, Babel env Adds defaults QueryWeekly Platform News: HTML Inspection in Search Console, Global Scope of Scripts, Babel env Adds defaults QueryApr 19, 2025 am 11:18 AM

In this week's look around the world of web platform news, Google Search Console makes it easier to view crawled markup, we learn that custom properties

IndieWeb and WebmentionsIndieWeb and WebmentionsApr 19, 2025 am 11:16 AM

The IndieWeb is a thing! They've got a conference coming up and everything. The New Yorker is even writing about it:

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

Atom editor mac version download

Atom editor mac version download

The most popular open source editor