CODEWITHSUNDEEP
htmlcssiosbackgroundmedia-queries
user2560895
user2560895

Reputation: 1531

Fixed background image with ios7

I have a project that I am using the fixed background image. It works great on everything except ios7. On the ipad the background image is zoomed in and blurry. Here is the CSS code I am using -

.header {
  display: table;
  height: 100%;
  width: 100%;
  position: relative;
  color: #fff;
  background: url(../images/boston2.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  }

here is a link to the live page - www.wdeanmedical.com

What am I missing?

Upvotes: 58

Views: 121528

Answers (14)

Raditya Adi Baskara
Raditya Adi Baskara

Reputation: 71

I've done a workaround for this problem. Just create a fixed div that siblings the content, with height: 100vh, and width: 100vw. Also, set the z-index to be lower than all your content (in my case it's set to -10). The code would be like this.

.parent {
  position: relative
}

.fixed-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: url('https://placehold.it/1920x800');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}
<div class="parent">
  <div class="fixed-background"></div>
  <div class="content">
    ...
   </div>
</div>

Upvotes: 0

Cruz Nunez
Cruz Nunez

Reputation: 3139

Try this:

HTML

<div class="container">
  <div class="fixed-img"></div>
  <h1>Words that go over text</h1>
</div>

css

.fixed-img {
  position: fixed;
  z-index: -1;
}

JSFiddle example

Upvotes: 9

Matthieu Riegler
Matthieu Riegler

Reputation: 54629

background-attachment: fixed has been fixed in Safari version 15.5 for MacOS (ref). It is still an issue in Safari for iOS (ref).

Upvotes: 3

cnmuc
cnmuc

Reputation: 6145

.imageDiv {
  background: url('image.jpg') center center no-repeat fixed;
  background-size: cover;
}

@supports (-webkit-touch-callout: none) {
  .imageDiv {
      background: url('image.jpg') center top no-repeat scroll;
      background-size: auto 100vh;
  }
}

Upvotes: 1

Tim
Tim

Reputation: 3043

Know this is an old thread, but wanted to provide an updated solution that builds on the solution from @Cruz-Nunez

Relying on viewport size is liable to fail. For example, relying on a 767px viewport won't work on iPads, and increasing the size negates the benefit of this approach.

Instead, you can check if the device has hover capabilities, and if it doesn't, override like this:

@media (hover: none) {
   .homeHero {
       background-attachment: initial;
   }
}

You can also check if the device has a coarse pointer (e.g. a finger) instead of a fine one (e.g. a mouse):

@media (pointer: coarse) { ... }

Upvotes: 22

LWRMS
LWRMS

Reputation: 597

EDIT: Sep 2020 This broke for some iPads so I now use:

@supports (-webkit-touch-callout: inherit) {
  .paral {
  background-attachment: scroll;
  }
}

Original Post: Combining the ideas of @brouxhaha and @yllama: Use a media query that targets iOS, which is found at this SO post, to set

    background-attachment: scroll;

This way the fixed background image appears for non-iOS mobile and all other devices.

.widget-wrap {
   background-attachment: fixed;
   ...
   ...
}

@supports (-webkit-overflow-scrolling: touch) {
  .widget-wrap {
  background-attachment: scroll;
  }
}

Upvotes: 12

Nicholas Gooding Rios
Nicholas Gooding Rios

Reputation: 533

I had the same issue you had and struggled with it almost 3 days. But as of June 2020 and improving on @AGrush's answer, here is a reliable solution I found for this that works on all devices and has 100% browser compatibility. It allows the desired effect in any place of the page and not just the top or bottom of the page, and you can create as many as you need or want.

This also addresses the different issues provided by @Ylama, @Cruz-Nunez, @Tim and @LWRMS answers that rely on device media queries that, as you know, have no standards and vary on many new devices. And also avoids the use of pseudo elements that I have never been really able to work with, as with the solutions proposed by @MugenFTW and @Gianni Unz.

The only known issue so far is with this option is in safari. The browser repaints the whole image on every scroll movement so it puts a heavy burden on graphics and most of the time makes the image flicker up and down some 10px. There is literally no fix for this, but i think there is also no better response for your inquire.

I hope this works for you. You can check the results live in www.theargw.com, where i have three different fixed background images.

body, .black {
  width: 100%;
  height: 200px;
  background: black;
}

.e-with-fixed-bg {
  width: 100%;
  height: 300px;
  
  /* Important */
  position: relative;
}

.bg-wrap {
  clip: rect(0, auto, auto, 0);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.bg {
  position: fixed;
  display: block;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center center;
  background-image: url(https://images.pexels.com/photos/949587/pexels-photo-949587.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500);
  transform: translateZ(0);
  will-change: transform;
}

.e-container {
  z-index: 1;
  color: white;
  background: transparent;
}
<div class="black"></div>
<div class="e-with-fixed-bg">
  <div class="bg-wrap">
     <div class="bg"></div>
  </div>
  <div class="e-container">
    <h1>This works well enought</h1>
  </div>
</div>
<div class="black"></div>

--------------------- EDIT --------------------- The code posted was missing the background wrapper that allows the background to not change size and maintain the fixed position. Sorry to post the wrong code this morning guys! But here is the change.

Upvotes: 12

tomDev
tomDev

Reputation: 5760

My solution is a workaround. I created a div with 100%, fixed, and added the background image since iOS still ignores "background-attachment: fixed".

<div style="
 position: fixed;
 width: 100%;
 height: 100%;
 background-size: cover;
 background-position:center;
 top: 0; right: 0;
 z-index: -1000;
 background-image: url(image.jpg)">
</div>

Upvotes: 1

MugenFTW
MugenFTW

Reputation: 51

.header {
    background-position: -99999px -99999px;
}
.header:before {
    content: ""; 
    background-image: inherit;
    position: fixed; 
    top: 0; 
    left: 0; 
    height: 100vh; 
    width: 100%; 
    -webkit-background-size: cover !important; 
    -moz-background-size: cover !important; 
    -o-background-size: cover;
    background-size: cover !important; 
    z-index: -1;
}

I believe I have achieved the desired effect on my own site using the above in conjunction with a fix to allow 100vh to work on ios devices.

Upvotes: 5

AGrush
AGrush

Reputation: 1167

Use CSS perspective instead of JS or fixed background parallax for best performance and device compatibility.

body, html { 
  margin: 0;
  padding:0;
}

.wrapper {
  height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  perspective: 1px;
}

.section {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: white;
}

.parallax::after {
  content: " ";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  transform: translateZ(-1px) scale(2);
  background-size: 100%;
  z-index: -1;
  background-image: url('http://placeimg.com/640/480/any');
}

.content {
  height: 200vh;
  display: flex;
  justify-content: center;
  background: red;
}
<div class="wrapper">
  <div class="section parallax">
   <h1>Heading</h1>
  </div>
  <div class="content">
    <h1>Site Content</h1>
  </div>
</div>

Upvotes: 1

Gianni Unz
Gianni Unz

Reputation: 31

What about something like this? (i just noticed that @mems already proposed it)

    body {
      position: relative;
    }

    body:after {
      position: fixed;
      top: 0;
      left: 0;
      height: 100%;
      width: 100%;
      content: '';
      background-image: url(./img/YOUR_IMG.png);
      background-size: cover;
      background-repeat: no-repeat;
      background-color: #000;
      background-position: bottom right;
    }

Upvotes: 3

Ylama
Ylama

Reputation: 2489

I had a very simple solution for this, after struggling with all the methods of fixing this.

i had the problem on my mobile IOS devices.

css (desktop)

#ci-hero-11 .widget-wrap , #ci-hero-12 .widget-wrap {
background-size: auto;
background-attachment: fixed;
}

.widget-wrap {
background-attachment: scroll;
}

Then i overwrite it with media query removing "fixed" as background attachment.

css (mobile)

/*-------- iPads (portrait and landscape) --------*/
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) {
#ci-hero-11 .widget-wrap , #ci-hero-12 .widget-wrap {

    background-attachment: initial;

}
}

initial - Sets this property to its default value. I think because IOS doesn't accept 'fixed' it falls back to a default value it accepts, scroll.

This worked for me on every device. Hope it helps someone else as well.

Upvotes: 11

Creedish
Creedish

Reputation: 11

Or you can just put a transparent div that covers the screen and use overflow:scroll. Just for the sake of it you can rewrite the height of the div with javascript to screen.height.

#scrollbox {
	width: 100%;
	height: 100%;
	overflow: scroll;
	background: transparent;
}

document.getElementByID("scrollbox").style.height = screen.height;

Upvotes: 1

brouxhaha
brouxhaha

Reputation: 4093

Using background-attachment: fixed with background-size: cover causes issues on most mobile browsers (as you've seen). You can try using background-attachment: scroll. This won't give your desired effect, but you'll see the images at least. You could use a media-query or two to limit it to devices that are tablets or phones by using @media screen and (max-device-width: 1024px){}

OR

You can use background-position: scroll and include some javascript that will keep the image at the scrolled position (keeping it at the top of the window): DEMO

Upvotes: 58

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