I have the following HTML:
<div class="shimmer">
<img src="someImage">
<img src="otherImage">
</div>
CSS:
.shimmer img{
color: grey;
display:inline-block;
-webkit-mask:linear-gradient(-60deg,#000 30%,#0005,#000 70%) right/300% 100%;
background-repeat: no-repeat;
animation: shimmer 3s infinite;
}
#keyframes shimmer {
100% {-webkit-mask-position:left}
}
A simple shimmer effect on the images.
When I open the HTML archive locally with Firefox or Chrome, it works perfectly fine. However, when I modify the internet webpage, the effect works fine in Chrome, but it doesn't appear in Firefox or mobile.
Help? I've been messing around with this for an hour and can't come up with the error. Thank you for your time.
It's because -webkit does not work in Firefox. But Firefox supports the mask property.
For example: You could declare all fallback properties.
div {
-webkit-mask: bla;
mask: bla;
}
Also see docs about the mask feature. At the bottom of the page you can see the supported browser.
https://developer.mozilla.org/en-US/docs/Web/CSS/mask
.shimmer img {
color: grey;
display: inline-block;
-webkit-mask: linear-gradient(-60deg, #000 30%, #0005, #000 50%) right / 300% 100%;
mask: linear-gradient(-60deg, #000 30%, #0005, #000 50%) right / 300% 100%;
background-repeat: no-repeat;
animation: shimmer 3s infinite;
}
#keyframes shimmer {
0% {
-webkit-mask-position: 140% 140%;
mask-position: 140% 140%;
}
100% {
-webkit-mask-position: -20% -20%;
mask-position: -20% -20%;
}
}
<div class="shimmer">
<img src="https://i.stack.imgur.com/Sbpt3.jpg">
<img src="https://i.stack.imgur.com/Sbpt3.jpg">
</div>
(Tested in Chrome 95 and Firefox 94)
I also optimized your animation a bit by moving the mask outside for a smoother effect.
Why this isn't working? What am I doing wrong?
CSS
#-webkit-keyframes test {
0% {
background-image: url('frame-01.png');
}
20% {
background-image: url('frame-02.png');
}
40% {
background-image: url('frame-03.png');
}
60% {
background-image: url('frame-04.png');
}
80% {
background-image: url('frame-05.png');
}
100% {
background-image: url('frame-06.png');
}
}
div {
float: left;
width: 200px;
height: 200px;
-webkit-animation-name: test;
-webkit-animation-duration: 10s;
-webkit-animation-iteration-count: 2;
-webkit-animation-direction: alternate;
-webkit-animation-timing-function: linear;
}
DEMO
http://jsfiddle.net/hAGKv/
Updated for 2020: Yes, it can be done! Here's how.
Snippet demo:
#mydiv{ animation: changeBg 1s infinite; width:143px; height:100px; }
#keyframes changeBg{
0%,100% {background-image: url("https://i.stack.imgur.com/YdrqG.png");}
25% {background-image: url("https://i.stack.imgur.com/2wKWi.png");}
50% {background-image: url("https://i.stack.imgur.com/HobHO.png");}
75% {background-image: url("https://i.stack.imgur.com/3hiHO.png");}
}
<div id='mydiv'></div>
Background image [isn't a property that can be animated][1] - you can't tween the property.
Original Answer: (still a good alternative)
Instead, try laying out all the images on top of each other using position:absolute, then animate the opacity of all of them to 0 except the one you want repeatedly.
It works in Chrome 19.0.1084.41 beta!
So at some point in the future, keyframes could really be... frames!
You are living in the future ;)
Works for me.
Notice the use of background-image for transition.
#poster-img {
background-repeat: no-repeat;
background-position: center;
position: absolute;
overflow: hidden;
-webkit-transition: background-image 1s ease-in-out;
transition: background-image 1s ease-in-out;
}
This is really fast and dirty, but it gets the job done: jsFiddle
#img1, #img2, #img3, #img4 {
width:100%;
height:100%;
position:fixed;
z-index:-1;
animation-name: test;
animation-duration: 5s;
opacity:0;
}
#img2 {
animation-delay:5s;
-webkit-animation-delay:5s
}
#img3 {
animation-delay:10s;
-webkit-animation-delay:10s
}
#img4 {
animation-delay:15s;
-webkit-animation-delay:15s
}
#-webkit-keyframes test {
0% {
opacity: 0;
}
50% {
opacity: 1;
}
100% {
}
}
#keyframes test {
0% {
opacity: 0;
}
50% {
opacity: 1;
}
100% {
}
}
I'm working on something similar for my site using jQuery, but the transition is triggered when the user scrolls down the page - jsFiddle
I needed to do the same thing as you and landed on your question. I ended up taking finding about the steps function which I read about from here.
JSFiddle of my solution in action (Note it currently works in Firefox, I'll let you add the crossbrowser lines, trying to keep the solution clean of clutter)
First I created a sprite sheet that had two frames. Then I created the div and put that as the background, but my div is only the size of my sprite (100px).
<div id="cyclist"></div>
#cyclist {
animation: cyclist 1s infinite steps(2);
display: block;
width: 100px;
height: 100px;
background-image: url('../images/cyclist-test.png');
background-repeat: no-repeat;
background-position: top left;
}
The animation is set to have 2 steps and have the whole process take 1 second.
#keyframes cyclist {
0% {
background-position: 0 0;
}
100% {
background-position: 0 -202px; //this should be cleaned up, my sprite sheet is 202px by accident, it should be 200px
}
}
Thiago above mentioned the steps function but I thought I'd elaborate more on it. Pretty simple and awesome stuff.
Your code can work well with some adaptations :
div {
background-position: 50% 100%;
background-repeat: no-repeat;
background-size: contain;
animation: animateSectionBackground infinite 240s;
}
#keyframes animateSectionBackground {
00%, 11% { background-image: url(/assets/images/bg-1.jpg); }
12%, 24% { background-image: url(/assets/images/bg-2.jpg); }
25%, 36% { background-image: url(/assets/images/bg-3.jpg); }
37%, 49% { background-image: url(/assets/images/bg-4.jpg); }
50%, 61% { background-image: url(/assets/images/bg-5.jpg); }
62%, 74% { background-image: url(/assets/images/bg-6.jpg); }
75%, 86% { background-image: url(/assets/images/bg-7.jpg); }
87%, 99% { background-image: url(/assets/images/bg-8.jpg); }
}
Here is the explanation of the percentage to suit your situation:
First you need to calculate the "chunks". If you had 8 differents background, you need to do :
100% / 8 = 12.5% (to simplify you can let fall the decimals) => 12%
After that you obtain that :
#keyframes animateSectionBackground {
00% { background-image: url(/assets/images/bg-1.jpg); }
12% { background-image: url(/assets/images/bg-2.jpg); }
25% { background-image: url(/assets/images/bg-3.jpg); }
37% { background-image: url(/assets/images/bg-4.jpg); }
50% { background-image: url(/assets/images/bg-5.jpg); }
62% { background-image: url(/assets/images/bg-6.jpg); }
75% { background-image: url(/assets/images/bg-7.jpg); }
87% { background-image: url(/assets/images/bg-8.jpg); }
}
If you execute this code, you will see the transition will be permanantly. If you want the backgrounds stay fixed while a moment, you can do like this :
#keyframes animateSectionBackground {
00%, 11% { background-image: url(/assets/images/bg-1.jpg); }
12%, 24% { background-image: url(/assets/images/bg-2.jpg); }
25%, 36% { background-image: url(/assets/images/bg-3.jpg); }
37%, 49% { background-image: url(/assets/images/bg-4.jpg); }
50%, 61% { background-image: url(/assets/images/bg-5.jpg); }
62%, 74% { background-image: url(/assets/images/bg-6.jpg); }
75%, 86% { background-image: url(/assets/images/bg-7.jpg); }
87%, 99% { background-image: url(/assets/images/bg-8.jpg); }
}
That mean you want :
bg-1 stay fixed from 00% to 11%
bg-2 stay fixed from 12% to 24%
etc
By putting 11%, the transtion duration will be 1% (12% - 11% = 1%).
1% of 240s (total duration) => 2.4 seconds.
You can adapt according to your needs.
The linear timing function will animate the defined properties linearly. For the background-image it seems to have this fade/resize effect while changing the frames of you animation (not sure if it is standard behavior, I would go with #Chukie B's approach).
If you use the steps function, it will animate discretely. See the timing function documentation on MDN for more detail. For you case, do like this:
-webkit-animation-timing-function: steps(1,end);
animation-timing-function: steps(1,end);
See this jsFiddle.
I'm not sure if it is standard behavior either, but when you say that there will be only one step, it allows you to change the starting point in the #keyframes section. This way you can define each frame of you animation.
Like the above stated, you can't change the background images in the animation. I've found the best solution to be to put your images into one sprite sheet, and then animate by changing the background position, but if you're building for mobile, your sprite sheets are limited to less than 1900x1900 px.
I needed to do the same thing recently. Here's a simple implementation
#wrapper { width:100%; height:100%; position:relative; }
#wrapper img { position:absolute; top:0; left:0; width:100%; height:auto; display:block; }
#wrapper .top { animation:fadeOut 2s ease-in-out; animation-fill-mode:forwards; }
#keyframes fadeOut {
0% { opacity:1; }
100% { opacity:0; }
}
<div id="wrapper">
<img src="img1.jpg" class="top" style="z-index:2;">
<img src="img2.jpg" style="z-index:1;">
</div>
You can use animated background-position property and sprite image.
You can follow by this code:
#cd{
position: relative;
margin: 0 auto;
height: 281px;
width: 450px;
}
#cf img{
left: 0;
position: absolute;
-moz-transition: opacity 1s ease-in-out;
transition: opacity 1s ease-in-out;
}
#cf img.top:hover{
opacity: 0;
}
<div id="cf">
<img class="button" src="Birdman.jpg" />
<img src="Turtle.jpg" class="top" />
</div>
You can use the jquery-backstretch image which allows for animated slideshows as your background-images!
https://github.com/jquery-backstretch/jquery-backstretch
Scroll down to setup and all of the documentation is there.
Well I can change them in chrome. Its simple and works fine in Chrome using -webkit css properties.
After executing this, background changes too fast and also it is a bit shaking. Help me to slow down this background change and stop background to shake.
HTML
<!-- Banner -->
<section id="banner">
<div class="inner">
<h2>Enhancing Your <br />Ways</h2>
<p>A free platform for schedualing</p>
</div>
</section>
CSS (Animation Delays not working)
<!--The animation-delays not working-->
#keyframes changebackground {
0% {
background-image: url("../Images/4.jpg");
animation-delay:5s;
}
25% {
background-image: url("../Images/1.jpg") ;
animation-delay:5s;
}
50% {
background-image: url("../Images/2.jpg") ;
animation-delay:5s;
}
100% {
background-image: url("../Images/3.jpg");
animation-delay:5s;
}
}
#banner {
margin-top:2.9em;
background-image: url("../Images/4.jpg");
background-position:center;
background-repeat:no-repeat;
padding:22em 0em 8em 0em;
background-size:cover;
width:100%;
float:left;
animation-name:changebackground;
animation-iteration-count:infinite;
animation-duration:2s;
animation-delay:5s;
}
If you need to slow down the animation then the property that needs to be modified is the animation's duration and not the animation delay. Set the animation-duration to a higher value. In the snippet, I have set it as 20s and so the change from each image to the next will take around 5s. If you need a time of 25s between each switch, then set the duration as 100s. animation-delay just adds a time delay before the start of the animation's first iteration but it doesn't really slow it down.
I don't really see a shake and so would need to see a demo of your code in-order to provide solutions. You may want to have a look at preloading all background images to stop it from causing problems.
#keyframes changebackground {
0% {
background-image: url("http://lorempixel.com/200/200/nature/4");
}
25% {
background-image: url("http://lorempixel.com/200/200/nature/1");
}
50% {
background-image: url("http://lorempixel.com/200/200/nature/2");
}
75% {
background-image: url("http://lorempixel.com/200/200/nature/3");
}
}
#banner {
margin-top: 2.9em;
background-image: url("http://lorempixel.com/200/200/nature/4");
background-position: center;
background-repeat: no-repeat;
padding: 22em 0em 8em 0em;
background-size: cover;
width: 100%;
float: left;
animation-name: changebackground;
animation-iteration-count: infinite;
animation-duration: 20s; /* set this */
animation-delay: 5s;
}
<section id="banner">
<div class="inner">
<h2>Enhancing Your <br />Ways</h2>
<p>A free platform for schedualing</p>
</div>
</section>
As you can see from the picture, it includes 6 parts.
I build a div 40px by 40px containing this picture.
overflow:hidden;
I want to animate this picture like it's blinking. which looks like: at the 1st second showing 1st part, the second showing the second part.
[Requirement: please don't make the animation like It's slide from bottom to top. ]
Here's how I did, not working.
1.using keyframe, like 20%, 40%, 60%, 80%, 100%. add top:-40, -80,...; but it looks like I'm slide the picture.
hope someone can help me out. Thanks a lot.
You can use the steps() function applied to a simple CSS3 background animation like so
http://codepen.io/anon/pen/JoEoPL
HTML
<div>Acquiring signal...</div>
CSS
div {
background-repeat: no-repeat;
background-image: url(http://i.stack.imgur.com/CAIVQ.png);
width: 80px;
height: 80px;
overflow: hidden;
text-indent: 100%;
white-space: nowrap;
-webkit-animation: blinksignal 6s steps(6, end) infinite;
animation: blinksignal 6s steps(6, end) infinite;
}
#-webkit-keyframes blinksignal {
0% { background-position: 0 0 }
100% { background-position: 0 -480px }
}
#keyframes blinksignal {
0 { background-position: 0 0 }
100% { background-position: 0 -480px }
}
From MDN
The steps() functional notation defines a step function dividing the domain of output values in equidistant steps. This subclass of step functions are sometimes also called staircase functions.
Do You mean about sth like here: http://jsfiddle.net/5jpasp1v/
I've simply add 3 `div' elements with state for each state, and change it with css
HTML:
<div id="wifi">
<div class="state state-1"></div>
<div class="state state-2"></div>
<div class="state state-3"></div>
</div>
CSS:
#keyframes blink {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
.state-1 {...}
.state-2 {...}
.state-3 {...}
I am new to the world of CSS3 and I've been trying to create a flying twitter bird effect using CSS3 but I am unable to achieve the complete thing which I want. I want to create a few top-down-left-right motion transitions for which I've created 3 .gifs in which the bird is flapping its' wings. Here's the effect which I've created, using CSS3, in which I have just used one of the three images.
Example 1
<a target="_blank" href="javascript:void(0)" id="bird"></a>
#bird {
background-image: url(http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird.gif);
width: 64px;
height: 62px;
top: 0px;
left: 0px;
position: absolute;
}
#bird
{
animation:myfirst 10s;
-webkit-animation:myfirst 10s; /* Safari and Chrome */
animation-delay:5s;
-webkit-animation-delay:5s; /* Safari and Chrome */
}
#keyframes myfirst
{
0% {left:0px; top:0px;}
25% {left:302px; top:95px;}
50% {left:-5px; top:214px;}
100% {left:0px; top:0px;}
}
#-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {left:0px; top:0px;}
25% {left:302px; top:95px;}
50% {left:-5px; top:214px;}
100% {left:0px; top:0px;}
}
Now when I am trying to use all the three images inside the CSS3 animation then the problem which I am facing is that the animation, which I had originally added to the .gif images using Photoshop, stops working. Here's the link of this example:
Example 2
<a target="_blank" href="javascript:void(0)" id="bird"></a>
#bird {
background-image: url(http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird.gif);
width: 64px;
height: 62px;
top: 0px;
left: 0px;
position: absolute;
}
#bird
{
animation:myfirst 10s;
-webkit-animation:myfirst 10s; /* Safari and Chrome */
animation-delay:5s;
-webkit-animation-delay:5s; /* Safari and Chrome */
}
#keyframes myfirst
{
0% {left:0px; top:0px;}
25% {width: 76px; height: 55px; background-image: url(http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird2.gif); left:302px; top:95px;}
50% {width: 76px; height: 55px; background-image: url(http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird3.gif); left:-5px; top:214px;}
100% {left:0px; top:0px;}
}
#-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {left:0px; top:0px;}
25% {width: 76px; height: 55px; background-image: url(http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird2.gif); left:302px; top:95px;}
50% {width: 76px; height: 55px; background-image: url(http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird3.gif); left:-5px; top:214px;}
100% {left:0px; top:0px;}
}
Apart from this, I was wondering if there's any way to add a delay between two transitions? Like using animation-delay:5s;, I was able to add a 5s delay between the the start and the animation at 25% so, similarly, is there any way to add a 5s delay between the animation at 25% and the animation at 50% and same thing for the animation at 50% and the animation at 100%?
Other than this, here are the links to the 3 images which i'd like to use in this animation:
Bird Image 1 http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird.gif
Bird Image 2 http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird2.gif
Bird Image 3 http://allwebutilities.com/pnc/wp-content/uploads/2013/04/bird3.gif
There is a similar question here :
Changing Background Image with CSS3 Animations
However on Chrome the background image does change but the wings don't flap while the CSS animation runs.
You could try using a sprite to combine the images and then change the background-position.