Animate div slider with CSS - html

I am designing an HTML+CSS slider with automatic transition between slides and infinite duration. I have
this slider on different pages with different content (and number of divs), so I need
to write the same code for everything.
<div class="slide-container">
<div class="slide">div 1 goes here!</div>
<div class="slide">div 2 goes here!</div>
<div class="slide">div 3 goes here!</div>
</div>
I have started with this CSS code and tried with different animations, but I don't know how to do this
.slide-container {
-webkit-animation: transition 2s infinite linear;
-moz-animation: transition 2s infinite linear;
-o-animation: transition 2s infinite linear;
}
EDIT: This is the last transition I used to solve my issue:
#-webkit-keyframes animation {
20%,30% {-webkit-transform: translate(100%);}
70%,100% {-webkit-transform: translate(-100%);}
}
I want to get a div in screen for 5-10 seconds and a transition between divs of 2 seconds (in brackets div that must be on screen at these moment, width=100%, height=50px):
(-start-DIV1 5s)--2s-->(DIV2 5s)--2s-->...-->(DIVN 5s)--2s-->(DIV1 5s)-->...
The reason I do slider with CSS is because I'm trying to avoid JavaScript and JQuery functions.

Below where 12s is defined is the total slide time. This divided by the amount of slides (which in this demo is 3) gives us 4s a slide in this example. This is one method where you can toggle slide time. But like the other poster mentioned you'll still have to customize a bit. My method demonstrates a horizontal slide approach with a smooth transition and fast load time. In any case pure CSS3 is what your after.
JS Poodle.
CSS3 power:
body {
padding: 1em;
background: #999
}
.scrollable {
width: 333px;
margin: 0 auto;
padding: 0;
border:10px solid #fff;
background: #000;
position: relative;
overflow: hidden;
text-align: center;
}
img {
max-width: 333px;
margin: 0;
float:left;
}
.items {
width:999px;
-webkit-animation: hscroll 12s infinite;
-moz-animation: hscroll 12s infinite;
-ms-animation: hscroll 12s infinite;
}
#-webkit-keyframes hscroll {
0% { margin-left: 0; }
27.33% { margin-left: 0 }
33.33% { margin-left: -333px; }
60.66% { margin-left: -333px; }
66.66% { margin-left: -666px; }
94.99% { margin-left: -666px; }
100% { margin-left: 0 }
}
#-moz-keyframes hscroll {
0% { margin-left: 0; }
27.33% { margin-left: 0 }
33.33% { margin-left: -333px; }
60.66% { margin-left: -333px; }
66.66% { margin-left: -666px; }
94.99% { margin-left: -666px; }
100% { margin-left: 0 }
}
#-ms-keyframes hscroll {
0% { margin-left: 0; }
27.33% { margin-left: 0 }
33.33% { margin-left: -333px; }
60.66% { margin-left: -333px; }
66.66% { margin-left: -666px; }
94.99% { margin-left: -666px; }
100% { margin-left: 0 }
}
<div class="scrollable">
<div class="items">
<img src="http://placehold.it/333x500/E8117F/FFFFFF&text=Horizontal"/>
<img src="http://placehold.it/333x500/FFFFFF/E8117F&text=css3"/>
<img src="http://placehold.it/333x500/3D668F/FFFFFF&text=slide show"/>
</div>
</div>

Here is a quick demo that demonstrates some of the techniques you'll need to use. I've used the same HTML markup you provided. This is not a ready-to-go "copy and paste" solution -- you'll need to take some time to understand the code and apply the concept to your particular use-case.
The technique basically involved lining up all the slides side-by-side, then shift the entire row of them every few seconds. The edges will be cropped so that only one slide is shown at a time.
To start with, you'll need to define the size of your "viewing area", by applying a width and height to the .slide-container element. Then apply overflow: hidden to the container, so that slides which aren't in the "viewing area" aren't shown.
Each slide should fill the "viewing area", so apply a width and height of 100% to each .slide element. You'll also need make them display as inline-block elements, so that they are aligned side-by-side, but still fill their container.
Finally, the hard part: defining the animation. Keyframe animations are percentage-based. Basically, since there are three slides, we want to switch after 33% of the animation has elapsed, again after 66%, and return to the beginning after 100%. We want a smooth "slide", so we'll make the actual transition last 5% in total -- so the first one actually starts at 28% and ends at 33%. The keyframes code looks like this:
#keyframes slide {
/* modify percentages to match how many items you have */
0% { margin-left: 0; } /* initial position */
/* (stays in first position ) */
28.333% { margin-left: 0; } /* start sliding */
33.333% { margin-left: -100%; } /* done sliding */
/* (stays in second position ) */
61.667% { margin-left: -100%; } /* start sliding */
66.667% { margin-left: -200%; } /* done sliding */
/* (stays in third position ) */
95% { margin-left: -200%; } /* start sliding */
100% { margin-left: 0; } /* done sliding - back to initial position */
}
And it can be applied to the first slide like this (adjust transition time as desired):
.slide:first-of-type {
animation: slide 10s ease;
animation-iteration-count: infinite;
}
After you've done this, you'll just need to adjust to your preferences. Experiment with slide durations and transition types. Perhaps change how the animation repeats at the end. You can even use the animation-play-state property to pause the animation when you hover over the "viewing window". I've included a full demo below that includes the hover-to-pause feature. If you're not 100% clear about how it works, try removing the overflow: hidden property from the .slide-container element.
#keyframes slide {
0% { margin-left: 0; }
28.333% { margin-left: 0; }
33.333% { margin-left: -100%; }
61.667% { margin-left: -100%; }
66.667% { margin-left: -200%; }
95% { margin-left: -200%; }
100% { margin-left: 0; }
}
.slide-container {
overflow: hidden; /* try commenting this line out! */
width: 150px;
height: 100px;
border: 1px solid #000000;
}
.slide {
display: inline-block;
width: 100%;
height: 100%;
}
.slide:first-of-type {
animation: slide 10s ease;
animation-iteration-count: infinite;
}
.slide-container:hover .slide:first-of-type {
animation-play-state: paused;
}
<div class="slide-container">
<div class="slide" style="background: #ff0000">div 1 goes here!</div><div class="slide" style="background: #00ff00">div 2 goes here!</div><div class="slide" style="background: #0000ff">div 3 goes here!</div>
</div>
Here is the same demo on jsFiddle.

Related

Marquee Words/Scrolling text not showing on iphone

I am unable to debug on iphones, was hoping someone would be able to point me to the problem.
I got the below code which shows marquee text - scrolling text. Works fine on all platforms except iphones. Any idea what's causing the issue?
On iphones it seems to be empty, but then all of a sudden itll show really fast scrolling text, then nothing again
.marquee {
margin: auto;
margin-top: auto;
padding-bottom: 32px;
margin-top: 55px;
}
.marquee-wrapper {
position: relative;
overflow: hidden;
height: 40px;
display: flex;
justify-content: center;
}
.marquee-words {
margin: 0 auto;
white-space: nowrap;
overflow: hidden;
position: absolute;
z-index: 1;
}
.marquee-words span {
display: inline-block;
padding-left: 100%;
animation: marquee-keywords 30s linear infinite;
-webkit-animation: marquee-keywords 30s linear infinite;
font-size: 20px;
letter-spacing: 0.2em;
animation-delay: -14s;
-webkit-animation-delay: -14s;
}
.marquee-double span {
animation-delay: 1s;
-webkit-animation-delay: 1s;
}
#keyframes marquee-keywords {
0% {
transform: translate(0, 0);
}
100% {
transform: translate(-100%, 0);
}
}
#-webkit-keyframes marquee-keywords {
0% {
-webkit-transform: translate(0, 0);
}
100% {
-webkit-transform: translate(-100%, 0);
}
}
<div class="marquee">
<div class="marquee-wrapper">
<p class="marquee-words">
<span>One example and in front of the room, One example and in front of the room</span>
</p>
<p class="marquee-words marquee-double">
<span>One example and in front of the room, One example and in front of the room</span>
</p>
</div>
</div>
I did not pin down exactly why IOS might be getting confused, but it may be some combination of flex and animation delays because if all this stripped away the problem disappears.
As you already have two copies of the complete text, this snippet simply puts them altogether in one element and animates that element but moving it just 50% of its width then starting again.
That way the start of the text goes directly into the position of the start of the second copy so the changeover is visually seamless.
.container {
overflow: hidden;
}
.marquee {
margin: 0;
padding-bottom: 32px;
margin-top: 55px;
display: inline-block;
}
.marquee-words {
white-space: nowrap;
animation: marquee-keywords 15s linear infinite;
font-size: 20px;
letter-spacing: 0.2em;
}
#keyframes marquee-keywords {
0% {
transform: translateX(0%);
}
100% {
transform: translateX(-50%);
}
}
<div class="container">
<div class="marquee">
<div class="marquee-words">One example and in front of the room, One example and in front of the room, One example and in front of the room, One example and in front of the room, </div>
</div>
</div>
Note: although the text is styled not to wrap it seems that a trailing space causes a slight mis-alignment of the text (a very slight jerkiness) when it is repeating at 50%. The final trailing space is replaced with a non breaking space in the snippet so that this space does not get ignored.

cross fading 2 elements to creat a looping animation with no js

I am wanting to animate an element so it cycles between "0% interest free credit" and "free delivery", I am trying to achieve this with no javascript, but I am only able to get the first element to fade away and not get the second to fade in.
.parent {
position: relative;
}
.parent p {
position: absolute;
top: 0;
left: 0;
}
.parent p:first-child {
animation: hide 2s ease-in
}
.parent p:last-child {
opacity: 0;
animation: show 2s ease-in animation-delay:2s;
}
#keyframes show {
to {
opacity: 1;
}
}
#keyframes hide {
to {
opacity: 0;
}
}
<div class="parent">
<p>0% interest free credit</p>
<p>free delivery</p>
</div>
What am I doing wrong I would like 1 fade out as the other fades in, and for it to loop endlessly.
First, you need to make sure your animation is set to loop. Use the keyword infinite as your animation-timing-function for that.
Second, we can restructure your animation to happen in one reusable keyframe sequence that shows and hides the element. By making the whole animation 4 seconds long and offsetting it by half of that (2 seconds) on one element, we achieve a seamless loop of the two elements fading in and out:
.parent {
position: relative;
}
.parent p {
animation: show 4s infinite;
position: absolute;
top: 0;
left: 0;
}
.parent p:last-child {
animation-delay: -2s;
}
#keyframes show {
0%, 50%, 100% {
opacity: 0;
}
10%, 40% {
opacity: 1;
}
}
<div class="parent">
<p>0% interest free credit</p>
<p>free delivery</p>
</div>

How can I cause moving text to gradually disappear and reappear rather than teleporting at the end of an animation? [closed]

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I have some right to left scrolling text that teleports back to the origin at the end of the animation, while I am more so looking for it to disappear out of and appear into the margin.
.example1 {
height: 50px;
overflow: hidden;
position: relative;
}
.example1 h3 {
position: absolute;
width: 100%;
height: 100%;
margin: 0;
color: white;
line-height: 50px;
animation: example1 10s linear infinite;te
}
#keyframes example1 {
from {
margin-left: 60%;
width: 300%;
}
to {
margin-left: 35%;
width: 100%;
}
}
body {
background-color: black;
}
<div class="example1">
<h3>text</h3>
</div>
If you need your CSS animation to only run once, you have to set the animation-iteration-count property to 1 (in fact, to not set it at all, as 1 is its default value).
You're currently setting it to infinite, using the animation shorthand, which sets multiple animation properties in one single declaration. Just remove infinte from that line. You should also remove the te following that declaration, which is invalid CSS.
To have your animation animate multiple properties, you can add as many animatable properties to your keyframes and they will animate accordingly. In your case, adding a 50% keyframe with opacity:1 and adding opacity:0 to the to keyframe will make your element fade from 1 to 0 starting at half of the animation until its end.
Using animation-timing-function, particularly with timing functions (a.k.a. as easings), allows adding acceleration and deceleration to animations, making them look more "natural", especially when used on movement animations.
Another handy property of CSS animations is the animation-fill-mode. It allows setting the animated properties to the values they have been animated to, when the animation ends (as opposed to being reset to any applying CSS). This avoids the "jump" whenever you have animated a property to a different value that what normally applies to it.
Last note, on performance: to make sure your animations run smoothly on any device, you should only animate properties which do not trigger repaints on subsequent elements. In fact, you should strive to ever animate only 2 properties: transform and opacity. In your case, rather than animating margin-left, which moves your element around and triggers repaint on subsequent elements in DOM, you should never actually move it and use transform to paint it at different positions.
Here's an example (not sure if this is what you asked for, but you can play around with it some more):
body {
overflow-x: hidden;
background-color: #212121;
}
.example1 h3 {
color: white;
font-size: 3rem;
margin: 0;
line-height: 50px;
animation: example1 5s cubic-bezier(.4,0,.2,1) forwards;
}
#keyframes example1 {
from{
transform: translateX(107%);
}
38% {
opacity: 1;
}
42% {
transform: translateX(35%);
}
60% {
opacity: 0;
transform: translateX(35%);
}
62% {
transform: translateX(0);
opacity: 0;
}
to {
opacity: 1;
}
}
<div class="example1">
<h3>text</h3>
</div>
If, on the contrary, you want your animation looping but want to simply create a smooth transition between end and start, the golden rule is in both from and to keyframes the animated properties have to have the same values (because default value of transform:translateX() is 0 and of opacity is 1, I don't need to set them in from - that's the starting point):
body {
overflow-x: hidden;
background-color: #212121;
}
.example1 h3 {
color: white;
text-align:right;
padding-right: 1rem;
font-size: 3rem;
margin: 0;
line-height: 50px;
animation: example1 5s cubic-bezier(.4,0,.2,1) infinite;
}
#keyframes example1 {
38% {
opacity: 1;
}
42% {
transform: translateX(-60%);
}
58% {
opacity: 0;
transform: translateX(-60%);
}
62% {
transform: translateX(0);
opacity: 0;
}
to {
opacity: 1;
}
}
<div class="example1">
<h3>text</h3>
</div>
For more on animation syntax and examples, I recommend MDN, a well curated documentation library, joint effort of Mozilla, Google, Microsoft and many, many others. Arguably, its most useful feature is linking, in the Specifications section, at the bottom, currently applying standards for the respective property or method, so you don't have to waste time tracking them yourself.
You can use more keyframes percentage to control better your animation in stead of using just two keyframes (from/to).
Below a quick example:
.example1 {
height: 50px;
overflow: hidden;
position: relative;
}
.example1 h3 {
position: absolute;
width: 100%;
height: 100%;
margin: 0;
color: white;
line-height: 50px;
animation: example1 10s linear infinite;te
}
#keyframes example1 {
0% {
margin-left: 60%;
width: 300%;
opacity: 0;
}
50% {
opacity: 1;
}
100% {
margin-left: 35%;
width: 100%;
opacity: 0;
}
}
body {
background-color: black;
}
<div class="example1">
<h3>text</h3>
</div>
Instead of animating the margin-left style you should animate the left style, example:
.example1 {
height: 50px;
width: 400px;
overflow: hidden;
position: relative;
margin: 0 auto;
}
.example1 h3 {
position: absolute;
top: 0;
left: 100%;
line-height: 50px;
animation: example1 10s linear infinite;
}
#keyframes example1 {
from {
left: 100%;
}
to {
left: -10%;
}
}
<div class="example1">
<h3>text</h3>
</div>

CSS3 diaporama, how to make the change gradual?

I'm making a diaporama in pure css, and so far so good, however each pic changes to the other abruptly and i'm trying to make the change gradual (one pic disapearing slowly while the other appears).
I've tried with all timing functions (except cubic-bezier since i'm not too sure how to use it yet) and it hasn't worked.
How to make the changes gradual? I've seen someone doing it with only css3 but I haven't been able to reproduce it.
Here is the css and the html
.diapo {
width: 350px;
height: 150px;
border: 3px solid #544B4D;
background-image: url("http://via.placeholder.com/350x150/F00");
background-size: 350px 150px;
animation-name: diapo1;
animation-duration: 9s;
animation-timing-function: linear;
animation-iteration-count: infinite;
animation-direction: normal;
}
#keyframes diapo1 {
0% {
background-image: url("http://via.placeholder.com/350x150/F00");
}
33% {
background-image: url("http://via.placeholder.com/350x150/0F0");
}
66% {
background-image: url("http://via.placeholder.com/350x150/00F");
}
}
<body>
<div class="diapo">
</div>
</body>
Thanks for any answer!
IMO, the best solution is to use multiple img in the DOM combined with some opacity animations:
.container {
position: relative;
/* Define size on the container: (best if aligned with images size) */
width: 350px;
height: 150px;
box-sizing: content-box;
/* fancy stuff, not required */
border: 1px solid #000;
border-radius: 5px;
overflow: hidden;
}
.container > img {
height: inherit;
width: inherit;
/* images are stacked on top of each other */
position: absolute;
top: 0;
left: 0;
opacity: 0;
/* 10s is total time (time for a complete cycle) */
animation: fadeInOut 10s infinite;
}
.container > img:nth-child(2) {
animation-delay: 3.33s; /* totalTime * 1/3 */
}
.container > img:nth-child(3) {
animation-delay: 6.66s; /* totalTime * 2/3 */
}
/* choose a % of anim time allocated to transition,
let's call it transTime. Here it's 10%. */
#keyframes fadeInOut {
0% {
opacity: 0;
}
/* transTime */
10% {
opacity: 1;
}
/* transTime + (100% / image count) */
43% {
opacity: 1;
}
/* previous + transTime */
53% {
opacity: 0;
}
}
<div class="container">
<img src="http://via.placeholder.com/350x150/F00"/>
<img src="http://via.placeholder.com/350x150/0F0"/>
<img src="http://via.placeholder.com/350x150/00F"/>
</div>
I strongly advise you to use a preprocessor that allow variables and loops (maybe SCSS or Less) to generate the nth-child section and even the animation block
I don't know that most browser can interprete a change in background-image gradually... How can they interprete that change ? Should it mean the picture slides from the top, should it mean a fade out/fade in, should it mean a fade in of the new picture above the old one ?
I think you'd need to animate a fade out/in (The code below might not work as is, it is just to give you an idea) :
#keyframes diapo1 {
0% {
background-image: url("pics-about-us/a-u1.jpeg");
}
30% { opacity:1;}
33% {
background-image: url("pics-about-us/a-u3.jpeg");
opacity:0;
}
36% {opacity:1}
//etc...
If you want to do it with a gradual change over the whole animation, I would use on <div> child per background image and animate each individually.

Remove/Hide div from DOM after animation completes using CSS?

I have an animation where a div slides out the view, however when the animation is completed, the div just returns to its origin position in the view. How do I totally remove the div or hide it after the animation ends using just CSS?
Here is the markup:
<div class="container">
<div class="slide-box" id="slide-box""></div>
</div>
and the css:
.slide-box {
position: relative;
width: 100px;
height: 100px;
background-image: url(../pics/red.png);
background-position: center;
background-size: cover;
background-repeat: no-repeat;
animation: slide 5s linear 1;
}
#keyframes slide {
0% {
left: 0;
}
20% {
left: 20%;
}
40% {
left: 40%;
}
60% {
left: 60%;
}
80% {
left: 80%;
}
100% {
left: 100%;
overflow: hidden;
visibility: hidden;
}
}
I don't want it to fade out over the duration of the animation, i just want it to disappear once it hits 100% in the keyframe. Thanks ahead of time!
Use the animation-fill-mode option. Set it to forwards and the animation ends at it's final state and stay like that.
Altered based upon comments Set opacity fade to just last 1% of animation... simplified keyframes. Added a jquery option to literally remove the div from the DOM. CSS alone won't alter the markup, where jQuery will.
Although you can't animate the display property. If you want the div totally gone, after the opacity fades to zero, you can then add the display property to remove the div. If you don't wait for opacity to end, the div will just vanish without any transition.
/*
This jquery is added to really remove
the div. But it'll essentially be
VISUALLY gone at the end of the
animation. You can not use, or
delete the jquery, and you really
won't see any difference unless
you inspect the DOM after the animation.
This function is bound to animation
and will fire when animation ends.
No need to "guess" at timeout settings.
This REMOVES the div opposed to merely
setting it's style to display: none;
*/
$('.slide-box').bind('animationend webkitAnimationEnd oAnimationEnd MSAnimationEnd', function(e) { $(this).remove(); });
.slide-box {
display: block;
position: relative;
left: 0%;
opacity: 1;
width: 100px;
height: 100px;
background: #a00;
animation: slide 1s 1 linear forwards;
/*
animation-name: slide;
animation-duration: 1s;
animation-iteration-count: 1;
animation-timing-function: linear;
animation-fill-mode: forwards;
*/
}
#keyframes slide {
0% {
left: 0%;
opacity: 1;
}
99% {
left: 99%;
opacity: 1;
}
100% {
left: 100%;
opacity: 0;
display: none;
}
}
#-webkit-keyframes slide {
0% {
left: 0%;
opacity: 1;
}
99% {
left: 99%;
opacity: 1;
}
100% {
left: 100%;
opacity: 0;
display: none;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div class="slide-box" id="slide-box"></div>
</div>
animation: slide 5s linear forwards;
at 100%
opacity: 0;
display: none;
Try this.
Working fiddle: https://jsfiddle.net/jbtfdjyy/1/
UPDATE: JS mani
var slideBox = document.getElementById('slide-box');
setTimeout(function(){
slideBox.style.display = 'none';
}, 5000);
Try this. https://jsfiddle.net/jbtfdjyy/2/
Add something at 99% or so to your keyframes, and set opacity to 1 in that. If you have opacity: 1 at the start, then it will stay that way until 99%. Only at 100% will it change.
It's not technically fired at 100%. If you want that, I'd recommend using some JavaScript here, but this will at least give the illusion you want.
#keyframes slide {
0% {
left: 0;
}
20% {
left: 20%;
}
40% {
left: 40%;
}
60% {
left: 60%;
}
80% {
left: 80%;
}
99% {
opacity: 1;
}
100% {
left: 100%;
overflow: hidden;
opacity: 0;
display: none;
visibility: hidden;
}
}
UPDATE:
As per your request, here is a JavaScript version. Keep in mind, there are endless ways to accomplish such a task. I am using vanilla JS (no jQuery, etc.), and using ES6 syntax.
What we do here is set a timeout, and at the end of that timeout I broadcast an event animation_end. That event listener will handle the end of the animation (in this case, it adds a class which will handle the fading out). This is much more granular than you need it to be, you could simply do the adding of the class within the setTimeout, but I think it is slightly better this way as you can abstract you can do other things with events such as animation start, etc.
Here is the fiddle: https://jsfiddle.net/vmyzyd6p/
HTML:
<div class="container">
<div class="slide-box" id="slide-box""></div>
</div>
CSS:
.slide-box {
position: relative;
width: 100px;
height: 100px;
background-color: blue;
animation: slide 3s linear 1;
-webkit-transition: opacity 2s ease-in-out;
-moz-transition: opacity 2s ease-in-out;
transition: opacity 2s ease-in-out;
}
.animationEnd {
opacity: 0;
}
#keyframes slide {
0% {
left: 0;
}
20% {
left: 20%;
}
40% {
left: 40%;
}
60% {
left: 60%;
}
80% {
left: 80%;
}
100% {
left: 100%;
}
}
JavaScript:
// Create a function that handles the `animation_end` event
const animationEnd = () => {
// Grab the slidebox element
let slideBox = document.getElementById('slide-box');
// Get the class of the slidebox element
let slideClass = slideBox.getAttribute('class');
// Add the animation end class appended to the previous class
slideBox.setAttribute('class', slideClass + ' animationEnd');
};
// Create the animation end event
let animationEndEvent = new Event('animation_end');
// Cross browser implementation of adding the event listener
if (document.addEventListener) {
document.addEventListener('animation_end', animationEnd, false);
} else {
document.attachEvent('animation_end', animationEnd);
}
// Set the timeout with the same duration as the animation.
setTimeout(() => {
// Broadcast the animation end event
document.dispatchEvent(animationEndEvent);
}, 3000);