Hi I have several divs on my page which have background images that I want to expand to cover the entire div which in turn can expand to fill the width of the viewport.
Obviously background-size: cover behaves unexpectedly on iOS devices. I've seen some examples of how to fix it, but I can't make them work in my situation. Ideally I'd prefer not to add extra <img> tags to the HTML but if it's the only way then I will.
Here is my code:
.section {_x000D_
margin: 0 auto;_x000D_
position: relative;_x000D_
padding: 0 0 320px 0;_x000D_
width: 100%;_x000D_
}_x000D_
_x000D_
#section1 {_x000D_
background: url(...) 50% 0 no-repeat fixed;_x000D_
background-size: cover;_x000D_
}_x000D_
_x000D_
#section2 {_x000D_
background: url(...) 50% 0 no-repeat fixed;_x000D_
background-size: cover;_x000D_
}_x000D_
_x000D_
#section3 {_x000D_
background: url(...) 50% 0 no-repeat fixed;_x000D_
background-size: cover;_x000D_
}<body>_x000D_
<div id="section1" class="section">_x000D_
..._x000D_
</div>_x000D_
<div id="section2" class="section">_x000D_
..._x000D_
</div>_x000D_
<div id="section3" class="section">_x000D_
..._x000D_
</div>_x000D_
</body>The question is, how can I get the background image to completely cover the section div, taking into account the variable width of the browser and the variable height of the content in the div?
This question is related to
html
css
mobile-safari
I found the following on Stephen Gilbert's website - http://stephen.io/mediaqueries/. It includes additional devices and their orientations. Works for me!
Note: If you copy the code from his site, you'll want to edit it for extra spaces, depending on the editor you're using.
/*iPad in portrait & landscape*/
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) { /* STYLES GO HERE */}
/*iPad in landscape*/
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : landscape) { /* STYLES GO HERE */}
/*iPad in portrait*/
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : portrait) { /* STYLES GO HERE */ }
I found a working solution, the following CSS code example is targeting the iPad:
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) {
html {
height: 100%;
overflow: hidden;
background: url('http://url.com/image.jpg') no-repeat top center fixed;
background-size: cover;
}
body {
height:100%;
overflow: scroll;
-webkit-overflow-scrolling: touch;
}
}
Reference link: https://www.jotform.com/answers/565598-Page-background-image-scales-massively-when-form-viewed-on-iPad
For Safari versions <5.1 the css3 property background-size doesn't work. In such cases you need webkit.
So you need to use -webkit-background-size attribute to specify the background-size.
Hence use -webkit-background-size:cover.
Reference-Safari versions using webkit
There are answers over the net that try to solve this, however none of them functioned correctly for me. Goal: put a background image on the body and have background-size: cover; work mobile, without media queries, overflows, or hacky z-index: -1; position: absolute; overlays.
Here is what I did to solve this. It works on Chrome on Android even when keyboard drawer is active. If someone wants to test iPhone that would be cool:
body {
background: #FFFFFF url('../image/something.jpg') no-repeat fixed top center;
background-size: cover;
-webkit-background-size: cover; /* safari may need this */
}
Here is the magic. Treat html like a wrapper with a ratio enforced height relative to the actual viewport. You know the classic responsive tag <meta name="viewport" content="width=device-width, initial-scale=1">? This is why the vh is used. Also, on the surface it would seem like body should get these rules, and it may look ok...until a change of height like when the keyboard opens up.
html {
height: 100vh; /* set viewport constraint */
min-height: 100%; /* enforce height */
}
Also posted here: "background-size: cover" does not cover mobile screen
This works on Android 4.1.2 and iOS 6.1.3 (iPhone 4) and switches for desktop. Written for responsive sites.
Just in case, in your HTML head, something like this:
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
HTML:
<div class="html-mobile-background"></div>
CSS:
html {
/* Whatever you want */
}
.html-mobile-background {
position: fixed;
z-index: -1;
top: 0;
left: 0;
width: 100%;
height: 125%; /* To compensate for mobile browser address bar space */
background: url(/images/bg.jpg) no-repeat;
background-size: 100% 100%;
}
@media (min-width: 600px) {
html {
background: url(/images/bg.jpg) no-repeat center center fixed;
background-size: cover;
}
.html-mobile-background {
display: none;
}
}
html body {
background: url(/assets/images/header-bg.jpg) no-repeat top center fixed;
width: 100%;
height: 100%;
min-width: 100%;
min-height: 100%;
-webkit-background-size: auto auto;
-moz-background-size: auto auto;
-o-background-size: auto auto;
background-size: auto auto;
}
I have had a similar issue recently and realised that it's not due to background-size:cover but background-attachment:fixed.
I solved the issue by using a media query for iPhone and setting background-attachment property to scroll.
For my case:
.cover {
background-size: cover;
background-attachment: fixed;
background-position: center center;
@media (max-width: @iphone-screen) {
background-attachment: scroll;
}
}
Edit: The code block is in LESS and assumes a pre-defined variable for @iphone-screen. Thanks for the notice @stephband.
@media (max-width: @iphone-screen) {
background-attachment:inherit;
background-size:cover;
-webkit-background-size:cover;
}
That its the correct code of background size :
<div class="html-mobile-background">
</div>
<style type="text/css">
html {
/* Whatever you want */
}
.html-mobile-background {
position: fixed;
z-index: -1;
top: 0;
left: 0;
width: 100%;
height: 100%; /* To compensate for mobile browser address bar space */
background: url(YOUR BACKGROUND URL HERE) no-repeat;
center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
background-size: 100% 100%
}
</style>
Source: Stackoverflow.com