I'm currently working on a code for a friend but I'm having issues with fading and am unsure how to proceed to complete it. My main problem is getting the image to fade back in after fading out. The opacity will return to normal once my mouse is no longer hovering over the image. However, rather than fading, the transition is instantaneous, which doesn't look very nice.
.top {
width: 580px;
height: 250px;
background-image:
url(http://i.imgur.com/RSelpFd.png);
}
div:hover {
opacity: 0;
filter: alpha(opacity=50);
transition: all 1s ease;
}
I know there are other ways to do this, but I'm still new to coding so I don't really understand them, so I was hoping there was a way to make what I've done work. Thanks ahead of time for the help.
JQuery is no needed. It's a very simple css implementation.
Hope this can help you.
https://jsfiddle.net/pablodarde/ggn89rp9/
HTML
<div class="top"></div>
CSS
.top {
width: 580px;
height: 250px;
opacity: 1;
filter: alpha(opacity=1);
transition: all 1s ease;
background-image:
url(http://i.imgur.com/RSelpFd.png);
}
div:hover {
opacity: 0.5;
filter: alpha(opacity=50);
}
Try this fiddle
https://jsfiddle.net/1c6s90wm/
Don't giving hover to the div rather give it to its class. Otherwise it ll work on all div tags
<div class="top"></div>
.top {
width: 580px;
height: 250px;
background-image:
url(http://i.imgur.com/RSelpFd.png);
// opacity: 1;
transition: all 1s ease;
}
.top:hover {
opacity: 0;
filter: alpha(opacity=50);
}
Use jquery could help.
$(document).ready(function(){
$(document).on('mouseover','div',function(){
$(this).css('opacity',0);
$(this).css('filter','alpha(opacity=50)');
$(this).css('transition','all 1s ease');
});
});
Note the 'hover' changed to 'mouseover' in jquery.
Related
Please can you help troubleshoot the transition in this CSS? My browser can see the code in the inspector but no transition is taking place. I have tried operating the transition on different properties including width and position but nothing works.
#header-image {
position: absolute;
top: 30px;
right: 30px;
background: transparent;
width: 250px;
margin-left: 10px;
opacity: 1;
transition: opacity 2s linear 1s;
}
I know I'm probably being thick so apologies in advance.
In order for the transition to work.. the property value should change. only then it will trigger the transition.
i.e) lets say #header-image initially has opacity: 0; width: 50px;.
but when you hover it you want to increase the opacity and width opacity: 1; width: 250px;
so your css will look like..
#header-image {
position: absolute;
top: 30px;
left: 30px;
background: blue;
width: 100px;
height: 100px;
margin-left: 10px;
animation: fadeIn 2s linear;
}
#keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
<div id="header-image"></div>
Then your transition will work. So basically transition will work only when there is a change in the value. But in your case you are setting the opacity:1 initially by default.
If you want to add this effect on page load then you have to use css animation or javascript. Below I have given an example snippet on how it can be achieved using css animation.
However if you are planning to use many animations then I recommend to use some popular libraries like Animista, Animate.css, wow.js
So i've recently working on some private project, and since i am a huge CSS fan i want to do most of the animations in CSS rather than in JavaScript.
Today i wanted to create something like this:
Text moving from left to right
I think this might be possible with CSS Animations. In theory, I have a div wrapper with position:relative, a fixed width and overflow:hidden. Inside, there is a div with position:absolute and left:0 and bottom:0. Now in some cases, the text is too long for the parent div, and i wanted to let text text "float" though the parent div: actually animating the div from left:0 to right:0.
I stumbled upon some CSS Animations and tried this
#keyframes floatText{
from {
left: 0;
}
to {
right: 0;
}
}
on the child div. And of course this didn't worked. Animations like from left :0 to left: -100px work, but this doesn't ensure that the whole text is visible, when it is longer than those additional 100px. Is there a nice and clean way to make this work? Surely JavaScript might rock this desired functionality. But I'd wanted to know if there is a way to do this in pure CSS.
Thanks in advance!
EDIT:
To clearify what I have in my mind, i've created a gif displaying what i want to accomplish with CSS animations:
Animated
As you see, we have three of that kind next to each other, some have a name which fits directly, some others might be too long and should be animated forth and back, so the user can read it :)!
Thanks again!
EDIT2:
Is there a way to accomplish something like this?
#keyframes floatText{
from {
left: 0px;
}
to {
left: (-this.width+parent.width)px;
}
}
This would be the ultimate solution, I know that this kind of coding is not possible in CSS, but maybe with some CSS3 tweaks like calc() or something? I'm out of ideas now :(
You can stop when your text hits the right border
This solution uses CSS translate.
The trick is that translate's percentages are corresponding to the current element and left referrs to the parent.
Make sure your text's display property is NOT inline.
Downsides of this CSS only approach:
Shorter texts also get animated. To counter that consider JavaScript or make your text min-width: 100%;. This can lead to minimal wiggling by the animation.
All texts get the same amount of animation duration, which can be awful for long texts. Again, consider JavaScript (you'll want to look at scrollWidth) or make many animation classes, which can be very hard to manage.
.animated {
overflow: hidden;
width: 11rem;
white-space: nowrap;
}
.animated > * {
display: inline-block;
position: relative;
animation: 3s linear 0s infinite alternate move;
}
.animated > *.min {
min-width: 100%;
}
#keyframes move {
0%,
25% {
transform: translateX(0%);
left: 0%;
}
75%,
100% {
transform: translateX(-100%);
left: 100%;
}
}
/* Non-solution styles */
.container {
display: flex;
flex-wrap: wrap;
}
.animated {
font-size: 2rem;
font-family: sans-serif;
border: 0.1rem solid black;
margin: 1rem;
}
.animated > * {
box-sizing: border-box;
padding: .5rem 1rem;
}
<div class="container">
<div class="animated">
<span>Short</span>
</div>
<div class="animated">
<span class="min">Short</span>
</div>
<div class="animated">
<span>Some more text</span>
</div>
<div class="animated">
<span>A really long text to scroll through</span>
</div>
</div>
change your keyframe value in %
Try This
body{
overflow: hidden;
}
p{
position: absolute;
white-space: nowrap;
animation: floatText 5s infinite alternate ease-in-out;
}
#-webkit-keyframes floatText{
from {
left: 00%;
}
to {
/* left: auto; */
left: 100%;
}
}
<p>hello text</p>
hi dude i have tried this
Note : but you will find one thing is missing and will see that animation will not reach to the purely left and right i mean you can't
see the whole text of the div.
and that is due to the value of the left and right i have set to the -100 and 100 so because i couldn't find the alternative for that so
right now trying to see that how can you make this happen.
and here is my try
div.main_div{
margin:0;
padding:0;
width: 20%;
height: 60%;
background-color:grey;
position:absolute;
overflow: hidden;
}
div.transparent_div{
width:100%;
height:50px;
bottom:0;
background:red;
position:absolute;
}
div.text_wrapper{
height:50px;
bottom:0;
z-index:10;
background:transparent;
white-space: nowrap;
font-family: Segoe UI,Frutiger,Frutiger Linotype,Dejavu Sans,Helvetica Neue,Arial,sans-serif;
color:white;
font-size:2em;
vertical-align: middle;
-webkit-transition: all 0.3s ease-in-out;
-moz-transition: all 0.3s ease-in-out;
-o-transition: all 0.3s ease-in-out;
-ms-transition: all 0.3s ease-in-out;
position:absolute;
-webkit-animation: anim 1.5s infinite;
animation: anim 1.5s infinite;
animation-direction: alternate-reverse;
-webkit-animation-timing-function: linear; /* Chrome, Safari, Opera */
animation-timing-function: linear;
}
#-webkit-keyframes anim {
from {
left: -100%;
}
to {
left:100%;
}
}
#keyframes anim {
from {
left: -100%;
}
to {
left:100%;
}
}
<body>
<div class="main_div">
<div class="text_wrapper">Hiii i am going right to left infinete times and here are the news
</div>
<div class="transparent_div"></div>
</div>
</body>
and here you can check out the demo of the above working code
DEMO CODE
Add ease-in-out to the animation for smoothness, and use % instead of px to move it left or right.
we can write jQuery code, for finding over-flow text and enable animation:
function AutoScrollText() {
var els = document.getElementsByClassName('container');
[].forEach.call(els, function myFunction(el) {
var isOverflowing = el.clientWidth < el.scrollWidth;
if (isOverflowing) {
$(el).children('span:first-child').addClass('animated');
}
var curOverf = el.style.overflow;
if (curOverf == "" || curOverf === "visible") {
$(el).css({ "overflow":"hidden"});
}
});
}
I am afraid there are similar questions to this but I didn’t found a concrete solution, so I created a fiddle:
http://jsfiddle.net/Garavani/yrnjaf69/2/
<div class= "category_item">
<div class= "cat_button">
<span class="title_cat">TEXT</span>
</div>
</div>
CSS:
.category_item {
position: absolute;
background-color: #999;
top: 100px;
left: 50px;
width: 200px;
height: 200px;
/* seems to be overwriten by animation keyframes */
-webkit-transition: -webkit-transform 0.215s ease-in-out;
transition: transform 0.215s ease-in-out;
cursor: pointer;
}
.category_item:hover {
-webkit-animation-name: easeBack;
animation-name: easeBack;
-webkit-animation-duration: 1s;
animation-duration: 1s;
-webkit-animation-fill-mode: forwards;
animation-fill-mode: forwards;
}
#-webkit-keyframes easeBack {
0% {
-webkit-transform: translateY(0);
transform: translateY(0);
}
50% {
-webkit-transform: translateY(-50px);
transform: translateY(-50px);
}
100% {
-webkit-transform: translateY(-30px);
transform: translateY(-30px);
}
}
.cat_button {
position: absolute;
width: 200px;
height: 55px;
bottom: 0;
border: 2px solid #fff;
color: #fff;
-webkit-transition: background 0.215s ease-in-out, border 0.215s ease-in-out, color 0.215s ease-in-out;
transition: background 0.215s ease-in-out, border 0.215s ease-in-out, color 0.215s ease-in-out;
}
.category_item:hover .cat_button {
background: #fff;
border-color: #fff;
color: #511c5b;
}
In this (simplified) animation everything works fine except for when the mouse leaves the entire box. The animation starts from it original state, but abruptly.
The basic transition time (and ease) is ignored because it seems the keyframes have higher importance and overwrite it.
What I need is the keyframe animation triggering AND when the mouse leaves it should turn back to the original state smoothly.
Is there a solution for this
1) in pure CSS
2) maybe with some little javascript only?
Thanks in advance for help and ideas!
EDIT:
After implementing the solution offered kindly by Toni this is the correct fiddle:
http://jsfiddle.net/yrnjaf69/40/
Thanks again Toni!
EDIT 2:
Sadly, yet, there is one question left. The part with the keyframes is not executed on Firefox even though I added all the -moz- vendors, too, in this fiddle:
http://jsfiddle.net/dr6Ld0wL/1/
Why?
PS: As far as I tested for now it works even in Opera (Beta). Only browser resisting is Firefox
EDIT 3:
The correct (working) code is now in this fiddle:
http://jsfiddle.net/dr6Ld0wL/16/
The keyframes also need to be explicitly divided in vendor prefixes. Jesus Christ. Those prefixes…
Here is a jsfiddle that achieves this.
.demo-hover {
position: relative;
margin: 100px;
animation: complexProcessReversed 2s ease-in forwards;
width: 160px;
height: 160px;
background-color: #88d;
}
.demo-hover:hover {
animation: complexProcess 2s ease-in forwards;
width: 100px;
height: 100px;
background-color: #732;
}
#keyframes complexProcess {
/* keyframes */
}
#keyframes complexProcessReversed {
/* keyframes (opposite) */
}
The animation out is assigned in the css in the main class, then the hover state kicks in on hover and css re-applies the original class properties on unhover.
The animation does trigger backwards on page load, so you might like to think of tweaking your animation to take this into account, like this example, pinched from this answer. Alternatively, use javascript (or jquery), like this example where the animations are triggered by adding and removing classes to the target using jquery:
JavaScript
$('.demo-hover').hover(
function() {
// mouse in
$(this).removeClass('forwards--reversed').addClass('forwards');
},
function() {
// mouse out
$(this).removeClass('forwards').addClass('forwards--reversed');
}
);
CSS
.forwards {
animation: complexProcess 2s ease-in forwards;
width: 100px;
height: 100px;
background-color: #732;
}
.forwards--reversed {
animation: complexProcessReversed 2s ease-in forwards;
width: 160px;
height: 160px;
background-color: #88d;
}
Also, I'd use #keyframe or transition. Use transition if you just need a simple even change from n to m but when things are more complex, such as one thing changing evenly over 100% but another thing not starting until 50% off the animation has played, then use a #keyframe
Using both will cause confusion, especially if you're trying to animate the same properties.
Finally css vendor prefixes are required
I'm using css transitions to cause a fade-in and fade-out effect on a background-image property. The property gets changed via jquery when the user scrolls.
It initially did not work on any browser. I found that setting an completley empty/transparent PNG file on the original element made chrome work, but the other browsers still don't.
Here's an example of the code:
nav {
background:url(/img/empty.png);
background-origin:border-box;
background-position:top;
background-repeat:repeat;
background-size:50px 50px;
transition: background 1s ease-in-out;
-moz-transition: background 1s ease-in-out;
-webkit-transition: background 1s ease-in-out;
}
.contrast {
background:#3a3a3a url(/img/xnav.jpg);
background-origin:border-box;
background-position:top;
background-repeat:repeat;
background-size:50px 50px;
}
The contrast class gets applied to the nav element via jquery. It only seems to fade out on most browsers, but not fade in. It works properly in chrome.
Q1: Is there a cleaner way to do this? Adding a transparent PNG as a background element to the nav element seems like a hack.
Q2: This still doesn't work on firefox, IE or Safari. Can anyone suggest a clean fix?
You can "fake" the background-image opacity with pseudo-element on your:
nav{
position:relative;
}
nav::before{
content: "";
background: url(/img/xnav.jpg);
background-origin:border-box;
background-position:top;
background-repeat:repeat;
background-size:50px 50px;
opacity: 0;
top: 0;
left: 0;
bottom: 0;
right: 0;
position: absolute;
transition: opacity 1s ease-in-out;
}
.contrast{ // applied on nav::before
opacity: 1;
}
Thanks to Nicolas Gallagher for this.
I am trying to animate a logo with spritesheet ans it is working pretty well.
The code is like
#logo {
background: url('../img/logo.png');
height: 142px;
width: 426px;
}
#logo:hover{
-webkit-animation: logoAnim .2s steps(19) forwards;
}
#-webkit-keyframes logoAnim {
100% { background-position: -8094px 0; }
}
So the image is animating on mouse hover. Now I am clueless how to reverse the animation on mouse out. Can someone help me pls
You can achieve the desired effect very easily using jquery like this:
$('#logo').mouseenter(function() {
$(this).css("background-position","-8094px 0");
});
$('#logo').mouseout(function() {
$(this).css("background-position","0 0");
});
and you can include the following Css to #logo according to your needs:
#logo {
-webkit-transition: 200ms ease-in-out;
}
This trick is made by animation-direction.
Example:
-webkit-animation: logoAnim 1s alternate-reverse;
http://jsfiddle.net/XuSXK/