I have text that should fade in on hover and fade out when the mouse leaves the bounding box. For that I used the following CSS:
.project h3 {
/* Other styles */
opacity: 0; /* Set the default opacity to 0 */
}
.project:hover h3 {
opacity: 1; /* Set the opacity to 1 when hovered over */
transition: opacity 0.3s ease; /* Add a smooth transition for the opacity change */
}
.project:not(:hover) h3 {
transition: opacity 0.6s ease; /* Add a slower transition for the opacity change when not hovered over */
}
When I load the page, I want it to be invisible from the start, but right now it starts opaque and fades out immediately. ChatGPT keeps suggesting to just remove the ".project:not(:hover) h3" style and is driving me insane. How can I keep the fade-out when I move my mouse away and still have it be invisible from the start?
The html context is literally just a div with the class "project" and that h3 in it, i created a separate test project to strip it down, the problem persisted.
I can't get -leave animations to work with ReactCSSTransitionGroup. I have the following code:
<ReactCSSTransitionGroup
transitionName="fader"
transitionEnterTimeout={500}
transitionLeaveTimeout={500}>
{React.cloneElement(children, {
key: pathname
})}
</ReactCSSTransitionGroup>
with the following styles:
.fade-enter {
opacity: 0.01;
}
.fade-enter.fade-enter-active {
opacity: 1;
transition: opacity 500ms ease-in;
}
.fade-leave {
opacity: 1;
}
.fade-leave.fade-leave-active {
opacity: 0.01;
transition: opacity 500ms ease-in;
}
If I look at the DOM both the -enter and -leave styles are being applied on route changes but only the -enter styles are animating. If I click rapidly between routes the leave animation does show up, but for previous routes. I.e. if I go A -> B -> A when I get back to A the leave animation will flicker briefly.
Ok, turns out the animation was being applied but the div was offscreen. Oops. When animating routes if you want the previous page to have a leave animation you have to add a position:absolute or something similar to keep it onscreen.
I have a div with a background color and css transitions
#foo {
background-color:rgba(255,0,0,0.9);
-webkit-transition: all 3000ms ease;
-moz-transition: all 3000ms ease;
-o-transition: all 3000ms ease;
transition: all 3000ms ease;
}
I also have a button. When the button is clicked, I would like to
immediately switch the div to transparent background and a final height
create a fade-in effect on background-color property only
To accomplish this, I've created some classes for the div
#foo.transparent {
background-color:transparent;
}
#foo.final {
background-color:rgba(255,0,0,0.9);
height:400px;
}
and apply them to the div with jQuery on click
$('#start').click(function() {
$('#foo').addClass('transparent').addClass('final');
});
Unfortunately, height switches immediately to the final value (this is correct), but the background color doesn't perform the required transition from transparent to final value. What am I missing?
(fiddle)
I think an easier solution might be to use jQuery's fadeIn() effect, like this:
Html:
<button id="start">start animation</button>
<div id="foo">some content</div>
CSS:
#foo {
background-color:rgba(255,0,0,0.9);
}
#foo.final {
height:400px
}
JQuery:
$('#start').click(function() {
console.log('click');
$('#foo').addClass('final').hide().fadeIn();
});
And your updated fiddle: https://jsfiddle.net/aqw4cbss/3/
height is not animatiable. use min-height && max-height instead.
plus the backgrounds in your initial state and final state are the same, so how can it be transitioned from 2 equals state.
jsfiddle
I think you should look into JQuery .animate and .css functions.
$('#foo').css("opacity", "0");
$('#foo').animate({backgroundColor: "green"}, 500);
note: you should specify a default background-color and opacity in the css to transition from.
EDIT: You'll need the JQuery Color plugin in order to make this work (it's very small.)
https://github.com/jquery/jquery-color
How can i display a easing effect, opening from the left, when the page is open? Like this site: http://focuslabllc.com/
I would use CSS transitions. Take a look at the example I've created http://jsfiddle.net/ZL9m7/1/
Relative CSS is simple as
.container {
opacity: 0.1;
transition: opacity 1s linear;
-webkit-transition: opacity 1s linear; /* Play with timing functions */
-moz-transition: opacity 1s linear;
-o-transition: opacity 1s linear;
}
.container-ease-in {
opacity: 1;
}
And tiny javascript trigger (jQuery for convinience):
$(function() {
$('.container').addClass('container-ease-in');
});
Like in dfsq-answer the animation will be triggered with a class by js (this time without jquery):
window.onload = function() {
var oElement = document.getElementById('content');
oElement.className = oElement.className + ' start_animation';
};
And the css changes the margin and the opacity with transition(-duration):
#content {
...
/* starting status */
margin: 10px 200px 10px 0px;
opacity: 0;
/* now set the animation duration */
transition-duration: 1s;
-moz-transition-duration: 1s;
-webkit-transition-duration: 1s;
-o-transition-duration: 1s;
}
#content.start_animation {
margin: 10px 100px; /* change horizontal margins */
opacity: 1; /* change opacity */
}
Also see this example.
This is the fella who wrote the js for the site you're referencing. I played with CSS as an option for this but ended up just going with jQuery 100%. I'll have a blog post soon about some of the dev aspects of our new site facelift and I'll talk about how we did that. It will inclue some jsFiddle demos etc.
You can hide your content initially (with CSS) and then, once the page content is loaded, use javascript to trigger/run an easing operation to make things visible.
Or, you can start with no content and build the page content with javascript in a way that reveals it with the easing you want.
You can use JQuery animation or YUI transition to achieve this. Hide the div and show it OR set the width to 0 and then animate it to maximum with a specific duration.
Is it possible to use CSS3 transition animation on page load without using Javascript?
This is kind of what I want, but on page load:
image-slider.html
What I found so far
CSS3 transition-delay, a way to delay effects on elements. Only works on hover.
CSS3 Keyframe, works on load but are extremly slow. Not useful because of that.
CSS3 transition is fast enough but don't animate on page load.
You can run a CSS animation on page load without using any JavaScript; you just have to use CSS3 Keyframes.
Let's Look at an Example...
Here's a demonstration of a navigation menu sliding into place using CSS3 only:
#keyframes slideInFromLeft {
0% {
transform: translateX(-100%);
}
100% {
transform: translateX(0);
}
}
header {
/* This section calls the slideInFromLeft animation we defined above */
animation: 1s ease-out 0s 1 slideInFromLeft;
background: #333;
padding: 30px;
}
/* Added for aesthetics */ body {margin: 0;font-family: "Segoe UI", Arial, Helvetica, Sans Serif;} a {text-decoration: none; display: inline-block; margin-right: 10px; color:#fff;}
<header>
Home
About
Products
Contact
</header>
Break it down...
The important parts here are the keyframe animation which we call slideInFromLeft...
#keyframes slideInFromLeft {
0% {
transform: translateX(-100%);
}
100% {
transform: translateX(0);
}
}
...which basically says "at the start, the header will be off the left hand edge of the screen by its full width and at the end will be in place".
The second part is calling that slideInFromLeft animation:
animation: 1s ease-out 0s 1 slideInFromLeft;
Above is the shorthand version but here is the verbose version for clarity:
animation-duration: 1s; /* the duration of the animation */
animation-timing-function: ease-out; /* how the animation will behave */
animation-delay: 0s; /* how long to delay the animation from starting */
animation-iteration-count: 1; /* how many times the animation will play */
animation-name: slideInFromLeft; /* the name of the animation we defined above */
You can do all sorts of interesting things, like sliding in content, or drawing attention to areas.
Here's what W3C has to say.
Very little Javascript is necessary:
window.onload = function() {
document.body.className += " loaded";
}
Now the CSS:
.fadein {
opacity: 0;
-moz-transition: opacity 1.5s;
-webkit-transition: opacity 1.5s;
-o-transition: opacity 1.5s;
transition: opacity 1.5s;
}
body.loaded .fadein {
opacity: 1;
}
I know the question said "without Javascript", but I think it's worth pointing out that there is an easy solution involving one line of Javascript.
It could even be inline Javascript, something like that:
<body onload="document.body.className += ' loaded';" class="fadein">
That's all the JavaScript that's needed.
I think I have found a sort of work around for the OP question - instead of a transition beginning 'on.load' of the page - I found that using an animation for an opacity fade in had the same effect, (I was looking for the same thing as OP).
So I wanted to have the body text fade in from white(same as site background) to black text colour on page load - and I've only been coding since Monday so I was looking for an 'on.load' style thing code, but don't know JS yet - so here is my code that worked well for me.
#main p {
animation: fadein 2s;
}
#keyframes fadein {
from { opacity: 0}
to { opacity: 1}
}
And for whatever reason, this doesn't work for .class only #id's(at least not on mine)
Hope this helps - as I know this site helps me a lot!
CSS only with a delay of 3s
a few points to take here:
multiple animations in one call
we create a wait animation that just delays the actual one (the second one in our case).
Code:
header {
animation: 3s ease-out 0s 1 wait, 0.21s ease-out 3s 1 slideInFromBottom;
}
#keyframes wait {
from { transform: translateY(20px); }
to { transform: translateY(20px); }
}
#keyframes slideInFromBottom {
from { transform: translateY(20px); opacity: 0; }
to { transform: translateY(0); opacity: 1; }
}
Well, this is a tricky one.
The answer is "not really".
CSS isn't a functional layer. It doesn't have any awareness of what happens or when. It's used simply to add a presentational layer to different "flags" (classes, ids, states).
By default, CSS/DOM does not provide any kind of "on load" state for CSS to use. If you wanted/were able to use JavaScript, you'd allocate a class to body or something to activate some CSS.
That being said, you can create a hack for that. I'll give an example here, but it may or may not be applicable to your situation.
We're operating on the assumption that "close" is "good enough":
<html>
<head>
<!-- Reference your CSS here... -->
</head>
<body>
<!-- A whole bunch of HTML here... -->
<div class="onLoad">OMG, I've loaded !</div>
</body>
</html>
Here's an excerpt of our CSS stylesheet:
.onLoad
{
-webkit-animation:bounceIn 2s;
}
We're also on the assumption that modern browsers render progressively, so our last element will render last, and so this CSS will be activated last.
add this to your css for fade in animation
body{animation: 2s ease-out 0s 1 FadeIn;}
#keyframes FadeIn {
0% {
opacity:0;
}
100% {
opacity:1;
}
}
increase the ease-out time if you want it to load slower
Even simplier solution (still with [one line inline] javascript):
Use this as the body tag:
Note that body. or this. did not work for me. Only the long ; querySelector allow the use of classList.remove (Linux Chromium)
<body class="onload" onload="document.querySelector('body').classList.remove('onload')">
and add this line on top of your other css rules.
body.onload *{ transform: none !important; }
Take note that this can apply to opacity (as requested by OP [other posters] ) simply by using opacity as a transition trigger instead. (might even work on any other css ruling in the same fashion and you can use multiple class for explicity delay between triggering)
The logic is the same. Enforce no transform (with :none !importanton all child element of body.onloadand once the document is loaded remove the class to trigger all transition on all elements as specified in your css.
FIRST ANSWER BELOW (SEE EDIT ABOVE FOR SHORTER ANSWER)
Here is a reverse solution:
Make your html layout and set the css accordingly to your final result (with all the transformation you want).
Set the transition property to your liking
add a class (eg: waitload) to the elements you want to transform AFTER load. The CSS keyword !important is the key word here.
Once the document is loaded, use JS to remove the class from the elements to to start transformation (and remove the transition: none override).
Works with multiple transition on multiple elements. Did not try cross-browser compatibility.
div {
width: fit-content;
}
#rotated {
transform: rotate(-50deg)/* any other transformation */
;
transition: 6s;
}
#translated {
transform: translate(90px)/* any other transformation */
;
transition: 6s;
}
.waitload {
transform: none !important;
}
<div id='rotated' class='waitload'>
rotate after load
</div>
<div id='translated' class='waitload'>
trasnlate after load
</div>
<script type="text/javascript">
document.addEventListener('DOMContentLoaded', init);
function init() {
[...document.querySelectorAll('.waitload')]
.map(e => e.classList.remove('waitload'));
}
</script>
Similar to #Rolf's solution, but skip reference to external functions or playing with class. If opacity is to remain fixed to 1 once loaded, simply use inline script to directly change opacity via style. For example
<body class="fadein" onload="this.style.opacity=1">
where CSS sytle "fadein" is defined per #Rolf,defining transition and setting opacity to initial state (i.e. 0)
the only catch is that this does not work with SPAN or DIV elements, since they do not have working onload event
start it with hover of body than It will start when the mouse first moves on the screen, which is mostly within a second after arrival, the problem here is that it will reverse when out of the screen.
html:hover #animateelementid, body:hover #animateelementid {rotate ....}
thats the best thing I can think of: http://jsfiddle.net/faVLX/
fullscreen: http://jsfiddle.net/faVLX/embedded/result/
Edit see comments below:
This will not work on any touchscreen device because there is no hover, so the user won't see the content unless they tap it. – Rich Bradshaw
Ok I have managed to achieve an animation when the page loads using only css transitions (sort of!):
I have created 2 css style sheets:
the first is how I want the html styled before the animation...
and the second is how I want the page to look after the animation has been carried out.
I don't fully understand how I have accomplished this but it only works when the two css files (both in the head of my document) are separated by some javascript as follows.
I have tested this with Firefox, safari and opera. Sometimes the animation works, sometimes it skips straight to the second css file and sometimes the page appears to be loading but nothing is displayed (perhaps it is just me?)
<link media="screen,projection" type="text/css" href="first-css-file.css" rel="stylesheet" />
<script language="javascript" type="text/javascript" src="../js/jQuery JavaScript Library v1.3.2.js"></script>
<script type='text/javascript'>
$(document).ready(function(){
// iOS Hover Event Class Fix
if((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i)) ||
(navigator.userAgent.match(/iPad/i))) {
$(".container .menu-text").click(function(){ // Update class to point at the head of the list
});
}
});
</script>
<link media="screen,projection" type="text/css" href="second-css-file.css" rel="stylesheet" />
Here is a link to my work-in-progress website: http://www.hankins-design.co.uk/beta2/test/index.html
Maybe I'm wrong but I thought browsers that do not support css transitions should not have any issues as they should skip straight to the second css file without delay or duration.
I am interested to know views on how search engine friendly this method is. With my black hat on I suppose I could fill a page with keywords and apply a 9999s delay on its opacity.
I would be interested to know how search engines deal with the transition-delay attribute and whether, using the method above, they would even see the links and information on the page.
More importantly I would really like to know why this is not consistent each time the page loads and how I can rectify this!
I hope this can generate some views and opinions if nothing else!
If anyone else had problems doing two transitions at once, here's what I did. I needed text to come from top to bottom on page load.
HTML
<body class="existing-class-name" onload="document.body.classList.add('loaded')">
HTML
<div class="image-wrapper">
<img src="db-image.jpg" alt="db-image-name">
<span class="text-over-image">DB text</span>
</div>
CSS
.text-over-image {
position: absolute;
background-color: rgba(110, 186, 115, 0.8);
color: #eee;
left: 0;
width: 100%;
padding: 10px;
opacity: 0;
bottom: 100%;
-webkit-transition: opacity 2s, bottom 2s;
-moz-transition: opacity 2s, bottom 2s;
-o-transition: opacity 2s, bottom 2s;
transition: opacity 2s, bottom 2s;
}
body.loaded .text-over-image {
bottom: 0;
opacity: 1;
}
Don't know why I kept trying to use 2 transition declarations in 1 selector and (not really) thinking it would use both.
You could use custom css classes (className) instead of the css tag too.
No need for an external package.
import React, { useState, useEffect } from 'react';
import { css } from '#emotion/css'
const Hello = (props) => {
const [loaded, setLoaded] = useState(false);
useEffect(() => {
// For load
setTimeout(function () {
setLoaded(true);
}, 50); // Browser needs some time to change to unload state/style
// For unload
return () => {
setLoaded(false);
};
}, [props.someTrigger]); // Set your trigger
return (
<div
css={[
css`
opacity: 0;
transition: opacity 0s;
`,
loaded &&
css`
transition: opacity 2s;
opacity: 1;
`,
]}
>
hello
</div>
);
};
Not really, as CSS is applied as soon as possible, but the elements might not be drawn yet. You could guess a delay of 1 or 2 seconds, but this won't look right for most people, depending on the speed of their internet.
In addition, if you want to fade something in for instance, it would require CSS that hides the content to be delivered. If the user doesn't have CSS3 transitions then they would never see it.
I'd recommend using jQuery (for ease of use + you may wish to add animation for other UAs) and some JS like this:
$(document).ready(function() {
$('#id_to_fade_in')
.css({"opacity":0}) // Set to 0 as soon as possible – may result in flicker, but it's not hidden for users with no JS (Googlebot for instance!)
.delay(200) // Wait for a bit so the user notices it fade in
.css({"opacity":1}); // Fade it back in. Swap css for animate in legacy browsers if required.
});
Along with the transitions added in the CSS. This has the advantage of easily allowing the use of animate instead of the second CSS in legacy browsers if required.