I'm building a website with a 960px design, but the designer has also requested that the page have a full-width background photo across it. He has supplied a 2000px image for this.
However, trickily, part of the photo is integral to the navigation of the page, so the image needs to be centred. So I want the left and right edges to overflow out of the viewport. I've tried to do this using CSS, but have failed.
I could do a javascript version to adjust the left margin based on the viewport when the document loads and the window is adjusted, but I expect it may perform badly, particularly on the adjustment. A lot of the target audience of the site have some serious legacy hardware, so will be using slow computers running IE6. Is there a good CSS way of doing this which would perform better?
UPDATE: Sorry, I wasn't very clear in terms of the "full-width" thing. The content of the site is all restricted to a 960px column, except this particular image, which should be the full-width of the browser window, even if it is greater than 960px. Using background-position is the method which I've already tried, but if I size the particular div to 2000px wide, then I haven't been able to center the div, whereas if I set it to 100% the background-position:center doesn't seem to work
One way you could do this is with background-position: center top;, put the 2000px image as a background to a 960px div like this:
DEMO
As far as I'm aware this is supported on IE6+
Just use background positioning.
body {
background: url(blah.jpg) center top no-repeat;
}
Try something like this on the image:
position: absolute;
left:50%;
margin-left:-1000px; /* half the width of the image */
However, if part of the image is going to be used for navigation, and it has a fixed 2000px width, i see a lot of tears in your future.
Consider dividing the image into layers that can be manipulated individually.
EDIT: As mentioned by Michael this approach is not good.
Related
I stumbled across a solution to a problem I was having with a website layout but wasn't sure if it was standard CSS practice or not. I've tested it on multiple platforms and browsers and it seems to be widely supported.
You can see what I'm talking about on this page.
The website linked to isn't my website but uses the same theme. I'm unable to post a link to my website as I'm working on it in a local environment.
The featured images are inside an element with position: absolute and the images themselves are set to width: 100% and object-fit: cover, and are unpositioned (i.e., static positioning).
The problem was I'm using product images and the object-fit: cover style setting was causing the images to get cut off.
The solution was to simply change the object-fit: cover setting to object-fit: contain which I understand is the default setting. This also centered the image even though the width of the images is less than the containing element.
It is happening because, when you use background-size: cover; it expands the image to cover the width of the div or element. In your case, image is being positioned center center that is why you have some top and bottom portion not visible. The only way I see to make this work is to increase the size of the element respectively with image or else resize the image to fit to the div.
If you want to check how it works. you can do this.
inspect element
change background-size: cover to contain
add css property height: 962px;
However, it is not a good idea.
I would suggest the keep it the way you have it now and adjust the background-position: if you want particular area of the image to be covered. or use the image that fit that div.
Also, the height of the div is being controlled with the content inside so make sure you have control on those content too. Easy way is to set min-height for the parent div with background image.
Let me know if this was helpful.
http://www.otislandscapeassociates.com/about/
I am experimenting with a banner ( the landscape image of twigs), but i am having difficulties in making it responsive across devices, e.g desktop, tablet, mobile without the image being stretched or not fitting correctly or being cut off at either end.
Would like some advice on how to get around this, also if i need to adjust the dimensions of the actually image, is it to big? Should it be smaller? etc.
I am currently doing everything in css, so this is my preferred method of modification.
Thanks in advance.
You can try
background-size: contain;
its the easiest way to make a background image to be responsive.
But note as the width adjusts with the screen width, it will also make the image proportionally reduce in height.
I can see you have a fixed height and already use
background-size: cover;
which is what i'll normally recommended if you want it auto fill the container irrespective of the size of the container.
You cant have both (not stretched & always fill irrespective of the size of container). Looking at the image ( the white space that blends with the page & assuming its a must use) i suggest you add this to the class so it remains responsive but always fixes the design at the bottom of the div so it can always blend into the white above. Let me know if you need any clarification or questions
background-position: center 100%;
body{
background-image: URL("someimage.jpg");
background-position: fixed;
}
This makes scrolling in Firefox really slow. Is there a way to achieve a large centered background image with "fixed" attachment, with which scrolling in Firefox works as well as if attachment was set to "scroll".
Thanks for any CSS / JS help!
Try background-attachment: fixed; instead.
Have you tried using a smaller resolution background image? That might make a difference, because the method you are using a valid and good one in my opinion.
You're missing a "background-position:" declaration. That might slow down the rendering process.
The best fix for this firefox behaviour is actually to use a little trick:
position the supposed background image as an img element inside a layer above your content layer
use css to position the content above and both layers exactly at top 0, left 0, the upper left corner of the window
utilize jquery to resize the img to the window width and height
use height 100% for the content and overflow: scroll
Now use css to position both layers absolute on top: 0 and left: 0 and use the z-index to position the content layer visible above the background image layer. By using jQuery you can resize the background image on load (.ready) and on window resize ($(window).resize) to fit the actual screen resolution. The content layer gets an scroll overflow and there you go. This workaround actually fixes any performance issues on firefox 3.x, but requires the use of jQuery.
I'm working on a project for an Artist, the project has been passed to me as the design has been completed. I have receieved the design in a .psd file and the size is huuuuuuuge 2504px x 1781px to be exact!
As there are lots of patterns and gradients on it, I'm a little unsure as to how to set the image up. I have put the image up online, I think the first pressing thing is to resize it to suit more modern screen sizes.
The image is attached, Any help or suggestions on how to manage the image are much appreciated.
Cheers
That´s not a very flexible design for different aspect ratios, stretching it on a wide-screen monitor will not look pretty.
I would probably make multiple versions of the image (different sizes) and use html5 and / or javascript techniques to serve the right image to the visitor.
I would not use it as a background image but put it in a div behind the rest of the content so that I can scale that div and the image to be 100% wide. Positioning it in the bottom-left corner should make the most important part (the frame) always well visible.
I hope for you that mobile browsers in a vertical position are not a requirement...
you can split ('old style' way) the image in parts (in a glace, a header, a right column, a footer) and use'em as background images for divs. I suggest using photoshop built-in funcions "save for websites" to optimize the image (as Jpeg) to get the best ratio 'small file - best appearance' (something like medium (50 or 60) quality, multiple passage otpimization and a 1000 px width).
This if you want to keep the fixed layout..
What resolution is the website designed for?
I found that resizing the image to 1280px width (911px height) works nicely for a browser window size of 1024x768, which is pretty much the minimum that anybody's going to be using these days.
With this CSS:
body {
background-image: url('/path/to/your/background.png');
background-position: left bottom;
background-attachment: fixed;
background-repeat: no-repeat;
background-color: #000000;
}
.. the main part of the picture (people holding the frame) will always be in view, and larger browser viewports will get more of the top and right portions of the picture.
However: Anybody with a browser with above 1280px will see the plain black background color.
Edit: There's also the CSS3 property background-size: 100%;, which will automatically shrink/stretch the image to fit the browser viewport.
Update: I found that PNG-8 gave me the best quality-vs-filesize for the resolution I mentioned above. It came in at 280KB, whereas a comparable quality JPG was in the 330KB range.
Consider using a fixed size layout with the same aspect ratio as the image and resize the image to the same dimensions as the layout. You can then either set the background colour to the same black as the image or a complementary colour.
A layout of around 1000px * 700px works well on most computer displays.
If you must have a flexible layout then it would be really nice if you could separate the components of the image (do you have all the layers?). ie the frame/people, the red floral designs of the corners, and the background with crossed bands.
Then use several divs and some javascript so that the frame and hands stays locked in position relative to the bottom left corner, the floral designs always gravitate towards the four corners and the background moves so as to keep the frame in the dark diagonal area; kind of sliding up and to the right along the red band. (I can see it in my minds eye bt it's hard to describe.)
I would like to have a repeat-x on my body background for a web site, but the background is 1024 wide, so on wider displays, the line where the image begins again will be positioned to the right of the body, and possibly visible. My content is in a div 800 wide centred on the body. I would like the 'split' like from the repeating background to occur in the centre of the body, where it is hidden by the content.
I'm sure this is possible, with some trickery, the details of which are beyond my novice design and layout skills.
WORKAROUND: I used the Liquid Rescale GIMP plugin, which uses seam carving, to stretch the images to twice their original size. It works great, and I'm happy for now, but it's not an answer to this question.
A straightforward way to do this without any CSS trickery or extra markup is to modify the image. Center the background image with:
background-position: top center;
...and then offset the actual image file in an editor. In Photoshop use Filter >> Other >> Offset and use a horizontal value that is half of the image's width. Likewise, in the Gimp use Layer >> Transform >> Offset.
That's not the clean CSS solution you were looking for, but it's a nice pragmatic fix.
just put in the style:
background-position: 400px 0px;
this will start the repeating 400px from the left side (thus moving the split under the content)
I think it is not possible to do this dynamically (without taking the screen size into account) without using CSS expressions. I don't know the details about browser support though. A quick google search turned up this page as an example of how to do this.
http://valums.com/vertical/
Adding to what David said, creating a seamless, tiling background image isn't that tough:
Seamless background with Photoshop
It takes a bit of time, but it will look good at all screen resolutions once you're done.