I am experiencing an issue with CSS3 gradients within a backend i am developing.
Firefox is rendering the gradient fine, but Safari creates strange extra lines of the same colour withing the gradient.
See the images for comparison.
Safari / Firefox
Can anyone point me to a cause? Would be great! Thank you, guys.
The colors used do not have enough contrast. What you're seeing is a browser implementation of what to do when there is not enough color depth supported. Safari takes an approach where it "guesses" what the intermittent, unsupported colors are, making what appear to be lines. Firefox takes another approach. It uses what's called dithering, where it takes a bit of one color and speckles it over the other color to give the appearance of gradation where there isn't enough contrast.
Possible solutions are increase the contrast or make a gradient in Photoshop or whatnot and apply the dithering manually.
Related
I recently updated to Safari 7.0.2 (comes along with Maverick) and noticed a significant change on colors on my webpage. Namely the grey tones are darker and the css generated gradients show ugly steps, no longer fluid. Colors with Chrome under Maverick are still the same, no longer comparable to Safari. So I have to define different CSS colors to have the same results on Chrome and Safari? Weird. Never had this problem of different colors not even among other browsers (Firefox and so on, all the same)
www.stefanseifert.com
Maybe I’d have to add that I am using a custom monitor color profile.
Edit:
Thanks Unmut for your quick answer and your interest! What you showed me is interesting, in fact I didn’t know about this. Leaned something. Unfortunately, yet, this is not the case here. First because it isn’t about the colors within images but about the ones defined by css. (which is very very bad in my eyes)
I will try to attach 3 pics to explain. Second, yes, the difference is not big but it is significant enough for me as a designer. On the bigger pic you see 3 screenshots. The grey color as I defined it in css should be #787878. All browsers display it correctly (as also Safari did before Maverick!) Safaris grey now is deeper.
color_difference http://www.stefanseifert.com/Color_difference.png.
And what’s even worse are the gradients created in css (plus transparency) that show very well on all browsers (as in the first pic), but with slightly visible scales in Safari (also NOT so with Safari before Maverick) as in the last pic.
gradient_1 http://www.stefanseifert.com/gradient_Chrome_andOthers.png.
gradient_2 http://www.stefanseifert.com/gradient_Safari_7.0.2.png.
I retain this a serious problem. All around I read about Mavericks improvement of color, for me this is a great disadvantage for it doesn’t give reliable # css colors. Someone with help?
I figured one problem out, at least. I work with a customized own color profile on my iMac. And it seems that this creates the confusion. If I turn to the standard iMac profile all browsers look the same and the screenshots give the right hex color values. Yet, this is what I don’t want to do. So no real solution here for me. Somewhere I read that it depends on srgb that are not used by Safari 7, don’t know if this is true but it maybe a useful hint for someone.
For what regards the less fluid css gradients, another problem that remains. New Safari is bad at this! Much more preferable Google Chrome now, but the sad thing is that one can’t force users to use Chrome instead of Safari. All standard Mac users will use Safari I am afraid.
Second I observed performance problems in Safari with complex css transitions. It helped a little force elements around to hardware acceleration or introduce back face visibility hidden all over the place, but this is not very satisfying and good part of the lousy performance remains even with it. I thought Apple wanted to better performance of its browser, but for me it seems worse now. Everything was just fine with Safari 6 and css transitions instead. A petty.
I think it has got a problem about Color Rendering & Color Profiles.
Why don't you check these links:
http://css-tricks.com/color-rendering-difference-firefox-vs-safari/
http://www.color.org/version4html.xalter
http://news.cnet.com/Safari-ushers-in-better-browser-colors/2100-1012_3-6191815.html
Note: I checked it Mac OSX Mountain Lion, Safari 6.03 and i didn't see big difference.
I found this:
Apple Safari Safari supports both v2 and v4 ICC profiles.
Unfortunately, it has no control over color on other page elements.
Tagged images look right, but every other page element has
over-saturated colors on a wide gamut LCD.
on
http://cameratico.com/guides/web-browser-color-management-guide/
Seems that Safari forces the webpage to use the full range of Monitor LCD while others like Chrome don’t. So if you changed your monitor color profile it is ignored by Safari or at least differently managed.
If you could influence on the way Safari interprets images color by tagging the images this is not possible with the rest of the elements as divs defined by CSS values.
I'm hunting some very odd rendering issues in IE9 in windows 7. I'm using the microsoft "filter" method wherever there are gradients, it's HTML5, and everything is in standards mode.
Please note, as there has been some confusion: This is happening everywhere there are rounded corners, including in situations where there are no gradients, and even no background color at all. The specific issue can be seen in the screenshots below as gaps in the border and color getting repeated on the x-axis, INSIDE the element.
As far as I can tell, I have set up everything correctly, and of course it all renders just fine in firefox and webkit browsers.
Has anyone ever seen this? I'm chasing my tail and googling turned up squat.
Input box:
DIV with gradient background:
Edit:
The twitter-bootstrap link provided below exhibits exactly the same issues on all their example elements. Smarter people than me are working on that project, so I'm racking this up as un-solvable with CSS alone. Feel free to close.
thats a known bug in IE9 and theres no really easy solution* to get rid of this. the easiest ways would be:
use a background-image containing the gradient instead of a gradient for IE < 10
use a plain background-color instead of a gradient for IE < 10
twitter bootstarp, for example has to deal with this, too. they've chosen to use a plain background-color for their buttons as you can read here:
In IE9, we drop the gradient on all buttons in favor of rounded
corners as IE9 doesn't crop background gradients to the corners.
*ugly svg-for-ie-solution: http://abouthalf.com/2010/10/25/internet-explorer-9-gradients-with-rounded-corners/
IE Filters and rounded corners don't play nicely together. You're going to have to choose between a solid background colour or square corners for IE. Vendor prefixed gradients are going to be supported in IE10, so there is that at least.
Twitter make note of this on the Bootstrap site, saying:
"In IE9, we drop the gradient on all buttons in favor of rounded corners as IE9 doesn't crop background gradients to the corners."
I am not sure how to exactly phrase this question so maybe that's why I can't find help with this.
I am coding a webpage and the designer has made a background for a part of it. It's sort of a two way gradient: both horizontal and vertical at the same time. I am attaching the image here because I'm not sure how to explain it.
I'm sorry if it's very obvious but I can't find anything resembling this anywhere. Thank you!
Here's the image:
EDIT: The question is, can I make this background using just CSS3?
Thanks!
Are you able to limit browser support to browsers that support multiple backgrounds?
If so, you can create two gradients, along with a border, to simulate that.
Here's a version that only works in Firefox: http://pastehtml.com/view/b295elnso.html
You can modify the webkit and other lines to get it working in other browsers. I used the Ultimate CSS Gradient Generator to build the lower gradient.
Here's a good listing of multiple background support.
(Edit: I meant only works in Firefox, not IE. Doh!)
*(Edit2: Added multiple background support listing)*
I want to have a vignetting effect on the background of a page I´m building. This is the page:
www.karolinadahl.se
I managed to get the effect I´m looking for in Firefox, and it seems to work ok. In Safari I get some kind of vignetting, though not quite what I´m looking for and the inset shadow slows the page down tremendously for some reason. Im using Safari 5.
I don't think it works in Explorer at all and I don't know about Chrome and Opera.
Is there a smarter way of achieving this effect on the background?
You're applying the effect correctly, however, these effects are
Not fully supported, which explains your problem with IE
Known to render differently from browser to browser
Still, time is on your side. Support will only improve. For a web-site still in development, I'd say stick with the CSS3 techniques rather than older, hackier solutions.
You could also try a gradient in the background. Might be more consistent.
For things like menubars and headers, a background color is nice.
But a background color that gracefully transitions from say Blue to White is even nicer.
I know this can be done by making a 1-pixel wide, X-pixel tall image file containing the desired fade and repeating it across the div, but does CSS have native support to just define colors and be done with it?
Can any other language handle this?
With CSS3, you can do that. However, CSS3 is not widely supported through browsers, so only the most recent of browsers (and not even all of them) will be able to display the gradient. Unless you're only interested in working with those browsers that can do it, you're going to have to stick with the 1px background image.
http://www.quirksmode.org/css/contents.html
http://www.w3.org/Style/CSS/current-work#CSS3
You mean a gradient?
Webkit browsers(Chrome and Safari), and apparently FF 3.6 now support CSS gradients:
see this link
According to the article, even IE has some proprietory CSS gradient support, I don't know how well that works though. You should always have a fallback to solid color though.