I'm trying to combine a transparent CSS gradient and a background image, and fail gracefully in browsers that don't support the gradient.
I have this CSS, which works fine in Webkit browsers, but seems to be totally ignored by non-Webkit browsers (e.g. Firefox), which display a white background:
body {
height:100%;
-webkit-font-smoothing: subpixel-antialiased;
padding-top: 2%;
padding-bottom: 2%;
background: -webkit-gradient(linear, left top, right top,
from(rgba(0,0,0,0.4)), to(rgba(0,0,0,0.4)),
color-stop(0.03, rgba(0,0,0,0.2)),
color-stop(0.06, transparent),
color-stop(0.94, transparent),
color-stop(0.97, rgba(0,0,0,0.2))),
url(../img/myimg.jpg) repeat;
}
However, if I set background to:
background: url(../img/myimg.jpg) repeat;
instead, it works fine in Firefox. Shouldn't Firefox just ignore the -webkit-gradient part of the rule? How can I make this Firefox-friendly?
You should try to use the standard, unprefixed linear gradient syntax - this is now quite widely supported: IE10, chrome 26 (current is 27), firefox 16 (current is 20), opera 12.1 (the latest version). To support mobile browsers you'll additionally need the webkit-prefixed version.
Using your example gradient, the standard syntax is...
background: linear-gradient(to left,
rgba(0,0,0,0.4), rgba(0,0,0,0.0) 6%, rgba(0,0,0,0.0) 94%, rgba(0,0,0,0.4));
You can see this in a jsfiddle example.
If the value is invalid, firefox won't read anything after; here your background is ignored as -webkit is an unknown property value for firefox, so in your example, -webkit is an unknown value for firefox at first so it will skip that and move to next property in that class..Say for example
background: asadsa, url('http://images.google.co.in/intl/en_ALL/images/logos/images_logo_lg.gif');
/* asadsa is invalid here, so firefox will skip to next property */
Demo
CSS
div {
background: asadsa, url('http://images.google.co.in/intl/en_ALL/images/logos/images_logo_lg.gif');
---^---
/* Invalid Value For Property background */
height: 200px;
width: 300px;
border: 1px solid #f00;
}
Firefox doesn't just ignore "that part" of the rule. Firefox ignores the whole rule when it doesn't recognize a part of it.
This means you can specify several rules and Firefox will pick only those that it understands:
body {
height:100%;
-webkit-font-smoothing: subpixel-antialiased;
padding-top: 2%;
padding-bottom: 2%;
background: url(http://lorempixel.com/400/200/) repeat;
background: -webkit-gradient(linear, left top, right top,
from(rgba(0,0,0,0.4)), to(rgba(0,0,0,0.4)),
color-stop(0.03, rgba(0,0,0,0.2)),
color-stop(0.06, transparent),
color-stop(0.94, transparent),
color-stop(0.97, rgba(0,0,0,0.2))),
url(http://lorempixel.com/400/200/) repeat;
}
fiddle:
http://jsfiddle.net/yb5AE/
Firefox understands the first background rule, but not the second. Therefore the first one is used.
Webkit understands both and therefore the second one overwrites the first one, because it is declared "later", and so the second one is used.
Related
I have a really simple CSS radial gradient, which looks significantly different in different in Safari and others:
<style>
body {
background: #000;
}
div {
height: 200px;
width: 200px;
background-image: radial-gradient(100px, #1493a4 0%, transparent 100%);
}
</style>
<div></div>
Any ideas, how I could make them all look like the Safari version?
Safari Firefox
Fiddle: https://jsfiddle.net/2234zy6o/3/
I finally found a simple solution: Safari needs an own style:
background-image: -webkit-radial-gradient(#1493a4, transparent);
Just make sure to add it after the standard definition, other browsers then use the standard one and ignore the -webkit one, while Safari sees the first but then finds -webkit and ignores the standard.
But it's not quite the same, nevertheless. So I did some 'interpolation' and added some stops:
background-image: -webkit-radial-gradient(100px,
#1493a4 0%,
rgba(20,147,164,0.4) 40%,
rgba(20,147,164,0.2) 55%,
transparent 100%
);
It's still not the same but quite similar - at least I can live with it.
I'm giving my a linear gradient but in Firefox, even new versions, what I get is something like bars of solid color building the gradient. This is what's in my CSS:
background-color: #d3d3d3;
background-repeat: repeat-x;
background: -moz-linear-gradient(top, rgba(145,145,142,1) 0%, rgba(253,253,253,1) 99%);
background: -webkit-gradient(linear, left top, left bottom, from(#d3d3d3), to(#fcfcfc));
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#d3d3d3',endColorstr='#fcfcfc');
background: -o-linear-gradient(rgb(211,211,211),rgb(253,253,253));
According to this, it is most unlikely you are facing a version problem. Firefox, as usual, was the first to implement a standards-compliant (no prefix) CSS property (and it has already been 9 versions back).
Try removing the background-repeat property as it is mostly useless for gradients unless you've set a background size. If it solves, I'd recommend posting a bug report on Bugzilla. Does it work well on IE10 and Chrome?
I have the following submit button in IE9:
The CSS I'm using is as follows:
.button,
input[type='button'],
input[type='submit'] {
text-decoration: none;
background: #eee;
color: #89a9d1;
padding: 4px 10px;
font-weight: bold;
-ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#fff', endColorstr='#eee')";
background: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#eee));
background: -moz-linear-gradient(top, #fff, #eee);
}
From what I understand on this page: http://www.colorzilla.com/gradient-editor/ this should work... I can't figure out where the blue is coming from. Using the IE developer toolbar if I deselect all styles that affect this element it still shows up looking like the image I've attached.
Does anyone have any suggestions on what could be causing this?
ColorZilla does not generate gradients with three-digit hexadecimal color values as they are interpreted differently within IE's filters (in fact, I believe they're invalid color strings). This discrepancy in your code is what's causing your gradient to appear blue in IE.
You need to expand the hex colors to six digits for them to be interpreted correctly:
-ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#ffffff', endColorstr='#eeeeee')";
I have been pulling my hair out trying to get the shadows to work on IE... They are working fine in chrome, safari, and firefox! Does someone have experience with this subject? I put the site up so you can see the full code and output.
Test Site
I am using lesscss, so maybe that is my issue? I hope not!!! I am also using the IE CSS3 Fix, ie-css3.htcThe code I am using is as follows... I was attempting to do this without the htc, but with no luck.. at least the htc got my background gradients to work in IE... before it was showing only blue-black, the default Microsoft background gradient colors.
predefine.less
.RUNgradient(#COLOR: #CLR1){
#CLRL:lighten(#COLOR, 10%);
#CLRD:darken(#COLOR, 10%);
background-color: #CLRL;
background-repeat:repeat-x;
background-image: -khtml-gradient(linear, left top, left bottom, from(#CLRL), to(#CLRD));
background-image: -moz-linear-gradient(top, #CLRL, #CLRD);
background-image: -ms-linear-gradient(top, #CLRL, #CLRD);
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #CLRL), color-stop(100%, #CLRD));
background-image: -webkit-linear-gradient(top, #CLRL, #CLRD);
background-image: -o-linear-gradient(top, #CLRL, #CLRD);
background-image: linear-gradient(top, #CLRL, #CLRD);
behavior: url(css/ie-css3.htc);
}
styles.less
div.wrapper{
width:500px;
margin:25px auto;
padding: 10px 25px;
text-align:center;
.RUNgradient;
.RUNshadow;
p{
font:24px #HEADERFONT;
color:#ffffff;
.RUNtextshadow;
}
}
Filters are the answer! Almost...
For the gradient,
filter: ~"progid:DXImageTransform.Microsoft.gradient(startColorStr="#CLRL~", EndColorStr="#CLRD~")";
And for the shadows,
filter: ~"progid:DXImageTransform.Microsoft.shadow(color="#SCLR~", Direction="#DIR~", Strength="#STR~")";
Only thing left is changing the direction in a way to have the shadow visible all around the element, not just to one side.
Solution
After researching Microsoft Filters, I figured out how to get a similar effect. The corners are a bit rough for my liking, but this is MUCH closer than before!
This is the shadow filer I used...
.RUNshadow(#BLURRING:10px){
#SCLR:#111111;
#DIR:225;
#DIR2:45;
#DIR3:135;
#DIR4:315;
#STR:4;
box-shadow: 0px 1px #BLURRING #111111;
-moz-box-shadow: 0px 1px #BLURRING #111111;
-webkit-box-shadow: 0px 1px #BLURRING #111111;
filter: ~"progid:DXImageTransform.Microsoft.shadow(color="#SCLR~", Direction="#DIR2~", Strength="#STR~")
progid:DXImageTransform.Microsoft.shadow(color="#SCLR~", Direction="#DIR~", Strength="#STR~")
progid:DXImageTransform.Microsoft.shadow(color="#SCLR~", Direction="#DIR3~", Strength="#STR~")
progid:DXImageTransform.Microsoft.shadow(color="#SCLR~", Direction="#DIR4~", Strength="#STR~")";
}
I have been pulling my hair out trying to get the shadows to work on IE... They are working fine in chrome, safari, and firefox! Does someone have experience with this subject?"
Yeah, that's normal. Most people don't bother. Remember to ask yourself, Do Websites Need To Look Exactly The Same In Every Browser?
If you really want this, you'll have to use the gradient filter for IE. Add the following style to your RUNgradient class:
filter: ~"progid:DXImageTransform.Microsoft.gradient(startColorStr="#CLRL~", EndColorStr="#CLRD~")";
For both of them you can use IE filters.
You can use the gradient filter for gradients and the Shadow filter for shadows. The gradient filter works very well, the shadow filter looks really bad.
You can read in the documentation of the filters how to use them. But if you want to do it automatic you need see how CSS3 please is dealing with the filters and convert gradients to IE filter gradients.
You need to add these lines to the style tag for making this to work in IE,
filter:progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#444444', endColorstr='#222222'); /* IE6 & IE7 */
-ms-filter:"progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#444444', endColorstr='#222222')"; /* IE8 */
Sample code Snippet:
.ms-viewheadertr ms-vhltr
{
background: #222 ;/when gradients doesn't fill it fills the color/
background: -webkit-linear-gradient(#444, #222);/* For Safari 5.1 to 6.0 */
background: -moz-linear-gradient(#444, #222);/* For Firefox 3.6 to 15 */
background: -o-linear-gradient(#444, #222);/* For Opera 11.1 to 12.0 */
background: linear-gradient(#444, #222);/* Standard syntax */
filter:progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#444444', endColorstr='#222222'); /* IE6 & IE7 */
-ms-filter:"progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#444444', endColorstr='#222222')"; /* IE8 */
}
I am using the following bit of CSS to create a linear background gradient. It seems to work just fine in IE8/9, FF, Safari and chrome but not in IE7. IE7 shows a solid (green) background. Here is my code
.menu_body a {
display:block;
color:#006699;
background: #008800;
/* Mozilla: */
background: -moz-linear-gradient(top, #0b71a4, #025f8e);
/* Chrome, Safari:*/
background: -webkit-gradient(linear,
left top, left bottom, from(#0b71a4), to(#025f8e));
/* MSIE */
filter: progid:DXImageTransform.Microsoft.Gradient(
StartColorStr='#0b71a4', EndColorStr='#025f8e', GradientType=0);
padding: 1px 18px;
}
In IE<=7, filters won't work unless element has layout.
zoom: 1;
Be aware that it can break other things, so old good background-image might be safe and reliable solution.
Also please note that your CSS lacks gradient properties for Opera, IE10 and updated syntax for Webkit.
The correct syntax is:
filter: progid:DXImageTransform.Microsoft.gradient
(startColorstr=#550000FF, endColorstr=#55FFFF00)
This is supported by IE4>
See the MSDN source here.
I'm unsure if the parameters of this transform are case sensitive - but seeing as most other CSS is, you could try:
startColorstr='#0b71a4', endColorstr='#025f8e'
Notice the lower-case starting character, and lower-case str suffix.