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.
Related
I have created a rotating linear-gradient background. Unfortunately, as it rotates, in the corners you can see white screen. I am trying to get it so the color fills the viewport with nothing visible but the rotating gradient.
Here is my code so far (done on codepen.io):
HTML
<div class="fade"></div>
CSS
body {
margin: 0;
}
.fade {
background-image: linear-gradient(0deg, red, blue, red);
height: 100vh;
width: 100%;
animation: revolve 1s infinite linear;
}
#keyframes revolve {
from {
transform: scale3d(1,1,1) rotateZ(0deg);
}
to {
transform: scale3d(1,1,1) rotateZ(360deg);
}
}
I originally had the scale3d as (2,2,1). Changing it to (1,1,1) didn't solve anything. I have also tried changing the height and width to greater than 100wv and setting a background-position of center center, but neither of those worked.
Here is the codepen.
Use the vmax unit like below to create a big overflowing square:
body {
margin: 0;
overflow:hidden;
}
.fade {
background-image: linear-gradient(0deg, red, blue, red);
position:absolute;
height: 200vmax;
width: 200vmax;
left:50%;
top:50%;
transform:translate(-50%,-50%);
animation: revolve 1s infinite linear;
}
#keyframes revolve {
to {
transform:translate(-50%,-50%) rotate(360deg);
}
}
<div class="fade"></div>
You can simplify with a pseudo element:
html::before {
content:"";
background-image: linear-gradient(0deg, red, blue, red);
position:fixed;
top:-50vmax;
bottom:-50vmax;
left:-50vmax;
right:-50vmax;
animation: revolve 1s infinite linear;
}
#keyframes revolve {
to {
transform: rotate(360deg);
}
}
my #keyframe CSS code seems alright. its not giving error yet its not showing at all on the browser.
the classname on html is img1.
my #keyframe CSS code seems alright. its not giving error yet its not showing at all on the browser.
the classname on html is img1.
somebody help
.img1 {
width: 150px;
animation-name: pics;
animation-duration: 25s;
animation-iteration-count: 1;
background-image: url("assets/pic1.png");
background-repeat: no-repeat;
background-size: 100%;
margin-top: 19px;
margin-bottom: 19px;
}
#keyframes pics {
0% {
background-image: url("assets/pic8.jpg");
}
12.5% {
background-image: url("assets/pic1.png");
}
25% {
background-image: url("assets/pic2.png");
}
37.5% {
background-image: url("assets/pic3.jpg");
}
50% {
background-image: url("assets/pic4.jpg");
}
62.5% {
background-image: url("assets/pic5.jpg");
}
75% {
background-image: url("assets/pic6.jpg");
}
87.5% {
background-image: url("assets/pic7.jpg");
}
100% {
background-image: url("assets/pic8.jpg");
}
}
Your animation is working, but as #Yudiz says you need to set a height to your .img1 element.
background-image property is setting a background image to your element, but il will not change his size depending of your background-image size. Right now, your .img1 element is 150px large, and 0px tall, so it's invisible.
The background image isn't smooth when it comes to animate it (some kind of blink) and I can't make it zoom from the image center.
This is for my personnal website I'm trying to make.
*{margin: 0;padding: 0;}
body
{
background-color: #0C090A;
background-image: url(../abstract-bg.png);
animation: zoom 30s infinite;
-webkit-animation: zoom 30s infinite;
}
#keyframes zoom {
0% {
background-size: 100%;
}
50% {
background-size: 105%;
}
100% {
background-size: 100%;
}
}
I would like to get the background image (which is 1920*1080) zoom slowly to 105% of it's original size (or something like that), and then go back to 100%. Also, if it's possible, make it zoom from the center, and not the top left corner. Thanks for those who can help.
yes of course you can :)
just add
background-position:center center;
background-repeat:no-repeat;
in the body css
and add
html{
height: 100%;
}
full css code:
* {
margin: 0;
padding: 0;
}
html {
height: 100%;
}
body {
background-color: #0C090A;
background-image: url(https://images.pexels.com/photos/556416/pexels-photo-556416.jpeg);
animation: zoom 30s infinite;
-webkit-animation: zoom 30s infinite;
background-position: center center;
background-repeat: no-repeat;
}
#keyframes zoom {
0% {
background-size: 100%;
}
50% {
background-size: 150%;
}
100% {
background-size: 100%;
}
}
you can test the code:
https://playcode.io/358401
It's choppy because the animation duration is too long for 5% of the width of the image. either increase the size or decrease the duration of the animation or use a bigger image.
Or you can use scale() which make use of the GPU i believe, However this time we won't be using the image as a background.
body{
overflow-x:hidden;
}
img {
transform-origin: center center;
animation: zoom 30s infinite;
max-width: 100%;
}
#keyframes zoom {
0% {
transform: scale(1);
}
50% {
transform: scale(1.05);
/* equals 105% */
}
100% {
transform: scale(1);
}
}
<img src="https://picsum.photos/id/238/1920/1080">
This question already has answers here:
background-position-y doesn't work in Firefox (via CSS)?
(9 answers)
Closed 3 years ago.
I know this has been answered somewhere already, but can't figure out what's wrong.
I have used repeating-linear-gradient for background and #-webkit-keyframes and #keyframes for animating it. It does work in google chrome but not in firefox.
HTML
<div class="menu_block"></div>
CSS
.menu_block {
height:100px; width:500px;
background: repeating-linear-gradient(45deg,#000,#000 20px,#fff 20px,#fff 40px);
background-size:56px 56px;
background-position-x:0%;
-webkit-animation:'slide' 30s infinite linear forwards;
}
#-webkit-keyframes 'slide' {
0%{background-position-x:0%;}
100% { background-position-x:100%;}
}
#keyframes 'slide' {
0%{ background-position-x:0%; }
100% { background-position-x:100%;}
}
jsfiddle is here
https://jsfiddle.net/mathews8881/0cj3L6wu/
Could somebody please help.
Try animating both params background-position: 0% 0;. Also missing non-prefixed animation rule.
.menu_block {
height: 100px;
width: 500px;
background: repeating-linear-gradient(45deg, #000, #000 20px, #fff 20px, #fff 40px);
background-size: 56px 56px;
background-position: 0 0;
-webkit-animation: slide 30s infinite linear forwards;
animation: slide 30s infinite linear forwards;
}
#keyframes slide {
0% {
background-position: 0 0;
}
100% {
background-position: 100% 0;
}
}
#-webkit-keyframes slide {
0% {
background-position: 0 0;
}
100% {
background-position: 100% 0;
}
}
<div class="menu_block">
</div>
Remove the single quotes on the animation/keyframes property values, the -webkit- prefix on animation and use background-position: 0%; instead of background-position-x:0%; (as mentioned in a comment, background-position-x is not supported across browser).
Note, since your prefixed properties weren't consistent applied I removed all of them, so you need to add them back to cover older browser versions needing them. Also, in your case, no need to use forwards in your animation when using infinite
.menu_block {
height:100px; width:500px;
background: repeating-linear-gradient(45deg,#000,#000 20px,#fff 20px,#fff 40px);
background-size:56px 56px;
background-position:0%;
animation: slide 30s infinite linear;
}
#keyframes slide {
0%{ background-position:0%; }
100% { background-position:100%;}
}
<div class="menu_block">
</div>
This is bugging me, because I know that this is possible, I just don't really know how to write it properly. Here's an image of my vision:
So far in my css, I've implemented the cloud animation
#home{
margin: 0;
padding-top: 327px;
height: 57.78vh;
background: #6bbfff url('../images/clouds.png') repeat-x fixed 50% 10%;
text-align: center;
-webkit-animation: cloudmove 180s infinite linear;
animation: cloudmove 180s infinite linear;
}
#keyframes cloudmove{
0% { background-position: 0% 10%; }
100% { background-position: 100% 10%; }
}
#-webkit-keyframes cloudmove{
0% { background-position: 0% 10%; }
100% { background-position: 500% 10%; }
}
I've been trying to add the landscape illustration in the image shown above as background image number 2, but I'm having trouble. How do I get the css animation to not apply to it?
Thanks!
You do it like this:
Fiddle
Your pertinent CSS relies on some new features of backgrounds in CSS3.
Layered background images
You can instantiate these like so:
.my-rule {
background-image: url(image1.png), url(image2.png);
background-position: 0 0, 50% 50%;
}
It's pretty simple! You just need to separate all rules for each respective background image with commas. That goes straight down to your animations as well, like so:
#keyframes cloudmove{
0% { background-position: 0% 10%, 0% 0%; }
100% { background-position: 100% 10%, 100% 0%; }
}
#-webkit-keyframes cloudmove{
0% { background-position: 0% 10%, 0% 0%; }
100% { background-position: 500% 10%, 100% 0%; }
}
Hope that helps!