I've got an ordered list, and I'm trying to make zebra stripes for its background. I'm using a repeating linear gradient for the background, but I keep running into a really weird bug in chrome. The long the list is, the blurrier the stripes get; it's usable when there's less than ~50 items, but gets too blurry to recognize after that. When there's less than 10 items, it's really crisp.
html:
<ul class="test">
<li class="subtest">foo</li>
<li class="subtest">bar</li>
<li class="subtest">baz</li>
<li class="subtest">foo</li>
<li class="subtest">bar</li>
<li class="subtest">baz</li>
etc...
</ul>
css:
.test{
background-image: repeating-linear-gradient(
180deg,
#ffffff 0px,
#ffffff 50px,
#f5f5f5 50px,
#f5f5f5 100px);
}
.subtest{
height:50px;
}
jsfiddle for example: http://jsfiddle.net/yLLF2/
Remove some elements from the list to see how it's supposed to look.
I originally had it working by styling the elements directly with :nth-of-type(2n), but users can dynamically hide/show elements, which breaks that implementation.
The bug only appears in chrome. Is there any way to fix this? Googling got me nowhere.
You are not stating the size of the background. Should be:
.test {
background-image: repeating-linear-gradient(
180deg,
#ffffff 0px,
#ffffff 50px,
#f5f5f5 50px,
#f5f5f5 100px);
background-size: 100% 100px;
}
Related
I started using CSS gradients, rather than actual images, for two reasons: first, the CSS gradient definitely loads faster than an image, and second, they aren't supposed to show banding, like so many raster graphics. I started testing my site on various screens recently, and on larger ones (24+ inches), the CSS linear gradient which constitutes my site's background shows very visible banding. As a provisional fix, I've overlaid the gradient with a small, repeating, transparent PNG image of noise, which helps a little. Is there any other way to fix this banding issue?
You can yield slightly better results by making your gradient go from the first colour to transparent, with a background-color underneath for your second colour. I'd also recommend playing around with background-size for large gradients that stretch across the screen, so the gradient doesn't actually fill the whole screen.
I know you won't like the sound of this, but the only real way right now to get a consistent cross-browser aesthetic in this case, is to use a repeating image.
If it's a simple linear gradient, then you only need it to be 1px wide and as high as the gradient, then make the background colour of the page as the final colour of the gradient so it runs smoothly. This will keep file size tiny.
If you want to reduce gradient bands in your image, use a PNG (not transparency) as I find these to be better suited than JPG's for this purpose.
In Adobe Fireworks, I would export this as a PNG-24.
Good luck.
http://codepen.io/anon/pen/JdEjWm
#gradient {
position: absolute;
width: 100%;
height: 100%;
background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(black), to(white));
background: -webkit-linear-gradient(top, black, white);
background: -moz-linear-gradient(top, black, white);
background: -ms-linear-gradient(top, black, white);
background: -o-linear-gradient(top, black, white);
background: linear-gradient(top, black, white);
}
I made a "scatter.png" to put with my gradient. Like this:
Open gimp
100x100 image
Add alpha channel
Filters -> Noise -> Hurl... Accept defaults
Set opactity to 5%
Save and then add to gradient.
background: url('/img/scatter.png'), linear-gradient(50deg,#d00 0,#300 100%);
It's a subtle effect on a subtle effect.
For a pure CSS answer you can use a blur filter to add blur to the css gradient and alleviate the banding. It can mean some rebuilding of the hierarchy to not blur the content and you need to hide the overflow to get crisp edges. Works really good on an animating background where the banding issue can be especially dire.
.blur{
overflow:hidden;
filter: blur(8px);
}
I know this issue is long solved, but for others experiencing banding and looking for a solution, a very easy fix for me was just simplifying the colours I included in my gradient. For example:
This gradient produces banding:
background-image: linear-gradient(-155deg, #202020 0%, #1D1D1D 20%,
#1A1A1A 40%, #171717 60%, #141414 80%, #101010 100%);
This gradient does not, and looks much the same:
background-image: linear-gradient(-155deg, #202020 0%, #101010 100%);
I know this is a bit very late, but I discovered a trick that works. For anyone having that rough edge at meet point of the colors. This removes it.
.gradient {
background: linear-gradient(
173deg,
rgba(0, 132, 255, 1) 50%,
rgba(255, 255, 255, 1) 50.5%
);
}
There's not really any method to remove the banding. CSS gradients are at the mercy of the various rendering engines of the browsers. Some browsers simply render better than others. The best you can do is short areas to cover and larger color ranges to increase the gradient steps.... Then wait for browser rending to improve.
Add a min-height.
#gradient {
min-height: 100vh;
background: linear-gradient(black, white);
}
you can also set background-repeat to no-repeat but shouldn't be necessary.
#gradient {
min-height: 100vh;
background: linear-gradient(black, white);
background-repeat: no-repeat;
}
this property seems to fix things
background-attachment: fixed;
got from this thread
Recently I have been coding a clicker game, and have found the need to use a meter to display progress. I wanted the meter to have a gradient that goes from light pink to cyan, and it works perfectly on chrome. However, when I used my home computer and booted up firefox; the gradient was no longer displayed; and the meter was a dull shade of green.
.pastrymeter::-webkit-meter-optimum-value {
background : linear-gradient(90deg, lightpink, cyan);
}
This is the styling for the meter; and nothing that I have changed fixes it. I tried adding the moz prefix to the background tag; which did nothing. I also tried changing background to background-image to see if it was an element thing; but that also did nothing.
What can I do to fix this?
Looks like you are targeting a non-standard feauture -webkit-meter-optimum-value, that isn't supported in Firefox.
https://developer.mozilla.org/en-US/docs/Web/CSS/::-webkit-meter-optimum-value
Try this, it is cross-browser compatible.
background: -moz-linear-gradient(90deg, lightpink, cyan);
background: -webkit-gradient(linear, left top, left bottom, from(#cfddac), to(#fff));
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#cfddac', endColorstr='#ffffff');
background: -o-linear-gradient(rgb(207,221,172),rgb(255,255,255));
Change the values as you may require
Can you try this second method ?
<div style="background-image: -webkit-linear-gradient(bottom, #FE1C4A 22%, #AB244A 61%);
background-image: -moz-linear-gradient(bottom, #FE1C4A 22%, #AB244A 61%);
width: 200px; height: 100px; text-align: center;">
</div>
I am a novice when it comes to css and am creating a custom audio player using a mixture of css and jquery. The progress bar of this audio player is a ring, which uses circle sectors to display progress. The sector is created using linear-gradient, like so:
background-image:
linear-gradient(-75deg, black 50%, transparent 50%),
linear-gradient(90deg, transparent 50%, white 50%);
In firefox this works perfectly, but in both chrome and ie, a very slim white line is visible on the outside of half of the circle, presumably where part of the linear-gradient is supposed to cover.
I have created a jsfiddle that displays the issue, https://jsfiddle.net/9dagsrzz/
Is there something that I am doing wrong that causes this, or is there a fix I can apply that removes this line?
Thank you for your time.
Edit - it has been over a month and I thought I would update and say that I have still not been able to find a complete solution to this problem. The best way of dealing with the issue is to include a covering border, as suggested by Pustur below.
Samiskeen,
I'm no CSS expert either but I do know that each browser has its required prefixes when dealing with gradients:
-moz- is for Mozilla Firefox
-webkit- is for Apple Safari, Google Chrome, and also for ios and Android
-o- is for Opera
-ms- is for Microsoft IE and presumably Edge
You can have all of these present on their own line and the browser will pick the correct one.
Example:
background-image:
-moz-linear-gradient(-75deg, black 50%, transparent 50%),
-moz-linear-gradient(90deg, transparent 50%, white 50%);
-webkit-linear-gradient(-75deg, black 50%, transparent 50%),
-webkit-linear-gradient(90deg, transparent 50%, white 50%);
-o-linear-gradient(-75deg, black 50%, transparent 50%),
-o-linear-gradient(90deg, transparent 50%, white 50%);
-ms-linear-gradient(-75deg, black 50%, transparent 50%),
-ms-linear-gradient(90deg, transparent 50%, white 50%);
The website http://caniuse.com lists the major CSS rules, attributes and whether browser specific versions are required.(Nixon, p. 439).
Play around with the prefixes, they should help correct your problem.
Good Luck.
Jim
Not sure if this is a definitive solution or the best, but it seems to work fine at least on chrome.
HTML:
<!-- divs instead of spans -->
<div id="container">
<div id="position_indicator"></div>
<div id="inside"></div>
</div>
CSS:
#container {
width: 100px;
height: 100px;
background-color: black;
position: relative;
padding: 20px;
}
#inside {
width: 90px;
height: 90px;
background-color: black;
border-radius: 100%;
position: absolute;
margin-left: 5px;
margin-top: 5px;
}
#position_indicator {
border: 1px solid black; /* Fix the border issue! */
margin-left: -1px; /* Compensate for the new border */
margin-top: -1px; /* Compensate for the new border */
width: 100px;
height: 100px;
border-radius: 100%;
position: absolute;
background-color: black;
background-image: linear-gradient(-75deg, black 50%, transparent 50%), linear-gradient(90deg, transparent 50%, white 50%);
}
Fiddle
Basically I'm trying to simulate Photoshop's image overlay thing using images and CSS for a menu.
There are 2 versions of the menu background image: one is the normal state (pink), and one the active state (blue). The entire menu is wrapped in a DIV with the normal (pink) image as background.
How can I make it so each active menu link uses the corresponding slice of the blue image?
Like this:
My code so far
Do you think this is possible with CSS?
CSS Only solution for modern browsers:
ul {
background-color:#ff00ff;
background-image: -moz-radial-gradient(50% 50%, ellipse closest-side, #ffffff 0%,#ff00ff 110%);
background-image: -webkit-radial-gradient(50% 50%, ellipse closest-side, #ffffff 0%,#ff00ff 110%);
background-image: -o-radial-gradient(50% 50%, ellipse closest-side, #ffffff 0%,#ff00ff 110%);
background-image: -ms-radial-gradient(50% 50%, ellipse closest-side, #ffffff 0%,#ff00ff 110%);
background-image: radial-gradient(50% 50%, ellipse closest-side, #ffffff 0%,#ff00ff 110%);
height:50px;
width:400px;
margin:0;
padding:0;
border-radius:25px;
overflow:hidden;
}
li {
width:100px;
height:50px;
float:left;
}
li:hover {
background-color:rgba(0,0,255,0.2);
}
Click to see a working demo: http://jsfiddle.net/AlienWebguy/ZLg4B/
If you need to support older browsers and can't use css3, there is a number of ways to do this. One of them:
You can cut out the blue image of the entire thing (you can actually make it wider)
then
li.active {
background: url('path/to/yourImage.png') no-repeat -50px 0;
/* 50px or however wide that rounded tip is */
}
li.active.first {
background-position: left top;
}
li.active.last {
background-position: right top;
}
/* you'll need to add 'active', 'first' and 'last' classes accordingly. */
Are you ever going to have links at the rounded parts? If not, you could just take a pixel-wide slice of the blue image and set that to the :hover state background with repeat-x.
There are definitely other ways to do this but this is the most straightforward IMHO.
Edit: After seeing your fiddle, perhaps this isn't the case. I would consider using JavaScript to calculate appropriate x-offsets for each link, and using a slice of the overlay image in that way. Or you could just make the first link a "special case" and use a generic different-color background for the rest of the links.
My Boss give me an image (please see below) and told him I would make his site look the same. Here is my code, but it doesn't look like the image:
HTML
<div class="clearfix" id="footer">
<ul>
<li>Become a Virtual Active Facility</li>
<li>About Us</li>
<li class="last">Contact</li>
</ul>
</div>
CSS
#footer {
background: -moz-linear-gradient(left center, white, white) repeat scroll 0 0 transparent;
margin-bottom: 25px;
margin-top: 25px;
opacity: 0.6;
padding: 10px 25px;
width: 914px;
}
How can I get the result to look the same?
Your gradient is defined as going from 'white' to 'white'. In other words, there is no gradient.
In the final 2014 syntax:
background-image: linear-gradient(to right, transparent, white);
Note that prefixed versions (moz-, webkit-, o-, etc) use a different syntax, for backwards compatibility.
try it:
background: -moz-linear-gradient(left center, transparent, white) repeat scroll 0 0 transparent;
You need to use alpha (rgba) look at that, may help you: CSS3 Transparency + Gradient
This one works for me
background: -moz-linear-gradient(
left,
rgba(0,0,0,0.001) 0%,
rgba(201,201,201,1) 50%,
rgba(0,0,0,0.001) 100%
);
I use it to add some fade effect on both side of my hr