CSS Background Image - css

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.)

Related

How to have image fill container during parallax scrolling and no-repeat?

The offending website: http://www.jasonmfry.com. The corresponding codepen: https://codepen.io/Auslegung/pen/Roapwv.
Scroll down until you can see a half inch of the image at the top of your screen, and you will notice another half inch of white above that. I want the images to fill the container and not leave that white space above themselves. I have tested this on the latest Chrome and Safari builds on Mac. On iPhone Chrome and Safari there is no white space, fwiw.
Removing line 88 of styles.css background-repeat: no-repeat fills that white space with the bottom of the image, but of course I don't want that. Reducing the scale value on line 94 transform: translateZ(1px) scale(1.08) will reduce the amount of white space shown, but at the expense of the parallax scrolling effect. How can I get the images to fill up that entire area, while still exhibiting parallax scrolling?
I've done a lot of googling and experimenting and haven't been able to figure anything out. Let me know if I'm missing any info that you need to help me out. I'm also having issues with image ratio during browser resize but that's another question altogether.
I used to be a WDI instructor, and actually probably would have taught your particular online class but left to go work on other things. Kudos on using StackOverflow! Say hi to Marc, Matt, and whoever else is around. :)
The issue here is that by default scale resizes things relative to the center of the element. You want it to center things relative to the bottom of the element.
Putting it another way: think of scale as sending out little arms to the edges of your image to pull in the edges. By default, the arms reach out from the center of your image and pull in all its edges equally. You want them to reach out out from the top of your image and "pull" up the bottom edge.
TLDR, just add this line: transform-origin:bottom;!
Edit:
The issue here is actually with the dimensions of the images themselves.
As long as the ratio of the window's height/width is greater than the image's height/width you won't have any issues, but once the window's ratio is smaller than the image's ratio you'll see that whitespace.
Your headshot is almost square, whereas the other images are very rectangular. If your browser window is wider than it is tall the headshot will behave, but resize the window to be taller than it is wide and you see the whitespace again. Conversely, make the window much shorter than it is wide and all the images will behave themselves.
You could resize all the images to be narrow and tall. The largest aspect ratio on devices is 16:9, so make the images <9x wide and >16x tall and you should be good.
Unfortunately I don't think there's slicker solution for this other than using Javascript.

Background-position, rule of thirds images, and mobile design

I'm working with images that have been aligned with rule-of-thirds on the focus of the image, and background-image to put the image in the page.
When a user is on a tablet (or bigger) device, I'm using background-position:50%; which is fine; I don't mind that the picture is aligned off to the side.
However, on mobile devices, I would like the subject (which is on the right rule-of-third line -- see my JSBin for an example) to be horizontally centered on the screen. I know that I can use different percentages, such as background-position:75% 50% to get it close, but as the width of the device changes the 75% is no longer "center".
Is there a way, without writing a hundred different media queries so that it's always centered, to have background-position be dynamic enough to always center an image on mobile?
Here's a JSBin of what I'm looking at.
Some assumptions:
Pictures will always be aligned on rule-of-thirds
Pictures will always have the same physical dimension
Work in IE9+
Not worried about vertical alignment
For smaller than 768px try:
background-position: -50vw;
And you may have to set the background size to 150% instead of cover for this case.

Large centred background image

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.

How to position the split line caused by background repeat

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.

CSS setting with on a div which contains a background

I have this website.
The div container contains a background with a grungy look, and the body contains another background that is repeated on the x coordinate.
If you view the site you'll see whitespace on the left and right side. I am wondering how I can set the background images to expand based on the screen resolution. Would it work to set a width based on percentage for each div?
To my knowledge, CSS does not support scaling background images, which is disappointing to say the least. Long story short, you'll probably have to fake it with a fixed-position, z-indexed img tag. That, or what you did: a large image with a background-repeat.
I dont see any issues with what you've got in FF3/IE6/IE7 and chrome. only issue i see is the transparent png in ie6 with the ugly gray behind it.
ie6 I gotta fix but what the customer wants is for the with of the page to size up based on the users computer resolution
Unfortunately, you can't scale the image itself.
What you could do would be remake the div structure so that the inner div contains the center of the grungy background and the sides were tiled through two separate divs. You could then recut the center piece to tile both vertically and horizontally and give it a width that is a percentage of the window size. You could keep it from getting too small via javascript.
This is not an optimal solution, but if the client is set on having it scale with the browser window, this might accomplish it for them.
thanks for all your answers, when i said white space i didnt mean actual white space what i was refering to was that the entire container div wasnt sizing (width wise) towards what the users computer resolution was. and since allot of the divs are set with a background image there is no css code for setting the width on the image but i guess it would work on the divs. but thankfully after talking with the customer he changed his mind and doesnt want it anymore :)

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