I am trying to achieve the effect shown here:
https://css-tricks.com/almanac/properties/t/transition/
Where the color changes when the user hovers over the element. But I want this to occur overtop a background image I set and for the animation to reverse when the user moves their cursor away from the element.
An example of which can be found here:
http://thefoxwp.com/portfolio-packery-4-columns/
I can get the transition part working with:
.box {
width: 150px;
height: 150px;
background: blue;
<!--background-image: url("http://lorempixel.com/380/222/nature");-->
margin-top: 20px;
margin-left: auto;
margin-right: auto;
-webkit-transition: background-color 2s ease-out;
-moz-transition: background-color 2s ease-out;
-o-transition: background-color 2s ease-out;
transition: background-color 2s ease-out;
}
.box:hover {
background-color: black;
cursor: pointer;
}
<div class="box"></div>
But I am having trouble achieving it with a background image and making the white animation transparent over top of it.
The better way to do it would be to use an overlay over the image and apply transition on its opacity.
See this FIDDLE
Use a wrapper div for both .box and .overlay. Since we want overlay to placed exactly top of the box, we absolute positioned overlay on the top of box.
<div class="wrapper">
<div class="box">
</div>
<div class="overlay">
</div>
</div>
You Css
.wrapper {
position: relative;
width: 150px;
height: 150px;
margin-top: 20px;
margin-left: auto;
margin-right: auto;
}
.box {
position: absolute;
//background: blue;
width: 100%;
height: 100%;
background-image: url("http://lorempixel.com/380/222/nature");
}
.overlay {
position: absolute;
z-index: 1;
opacity: 0;
width: 100%;
height: 100%;
background: white;
-webkit-transition: opacity 2s ease-out;
-moz-transition: opacity 2s ease-out;
-o-transition: opacity 2s ease-out;
transition: opacity 2s ease-out;
}
.overlay:hover {
opacity: 0.7;
}
You can add background-image:none on .box:hover. It will remove the background-image and you can get the background-color work. As soon as, you move out of the div.box, image will appear again.
.box {
width: 150px;
height: 150px;
background-image: url("http://lorempixel.com/380/222/nature");
margin-top: 20px;
margin-left: auto;
margin-right: auto;
-webkit-transition: background-color 2s ease-out;
-moz-transition: background-color 2s ease-out;
-o-transition: background-color 2s ease-out;
transition: background-color 2s ease-out;
}
.box:hover {
background-color: black;
cursor: pointer;
background-image:none;
}
<div class="box"></div>
the problem is that background and background-image cannot both exist at the same time. try using nested div tags: one with the background color nested inside the background-image.
Related
As far as I understand, if I'm trying to modify the style of an element which has the transition property, the modification will be executed in a gradual way. So is there any way to listen the change of the style, prevent the immediate modification and replace it with a custom animation?
that is transion If you want change the color using css transition
click more details
.box {
width: 150px;
height: 150px;
background: red;
margin-top: 20px;
margin-left: auto;
margin-right: auto;
-webkit-transition: background-color 2s ease-out;
-moz-transition: background-color 2s ease-out;
-o-transition: background-color 2s ease-out;
transition: background-color 2s ease-out;
}
.box:hover {
background-color: green;
cursor: pointer;
}
<div class="box"></div>
I have a left menu that slides in when the user clicks on the hamburger. Behind it is an overlay with the following SCSS:
.overlay {
background-color: $glb-nav-80-opacity-white;
position: fixed;
left: 0;
right: 0;
top: 0;
bottom: 0;
z-index: 200;
cursor: pointer;
}
.left-menu {
background: $glb-nav-dark-blue;
position: fixed;
overflow-x: hidden;
overflow-y: auto;
margin: 0;
padding: 0;
-webkit-transition: all 0.3s ease;
-moz-transition: all 0.3s ease;
transition: all 0.3s ease;
a:hover {
color: $glb-nav-white;
}
}
When people click on the hamburger menu, the overlay shows up abruptly. I need it to fade in. How can I do that using CSS?
Here's the HTML:
<div class="overlay"></div>
<div class="left-menu"></div>
When the user opens the page the left-menu has a left position of -284px. Then when people click on the hamburger icon, I add a class to the div that sets its left position to 0.
Instead of adding a class, you can set the opacity using jQuery's .CSS
For example:
$(".overlay").css({opacity:50});
To reset it, use
$(".overlay").removeAttr("style");
Use CSS transitions as you did for the menu:
.overlay {
background-color: $glb-nav-80-opacity-white;
position: fixed;
left: 0;
right: 0;
top: 0;
bottom: 0;
z-index: 200;
cursor: pointer;
-webkit-transition: all 0.3s ease;
-moz-transition: all 0.3s ease;
transition: all 0.3s ease;
}
Use css transitions as you did with the menu, ie:
.overlay {
// other css
-webkit-transition: opacity 500ms ease;
-moz-transition: opacity 500ms ease;
-o-transition: opacity 500ms ease;
transition: opacity 500ms ease;
}
Or, if using SASS: #include transition(opacity 500ms ease);
Note, you can set the timing and style to be what you like, more here: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions
just add transition to the overlayed div
div {
/* -transition: 2 seconds- */
-webkit-transition: width 2s; /* For Safari 3.1 to 6.0 */
transition: 2s;
}
div:hover {
height: 200px;
background: red;
}
<div>transition on hover</div>
My page has a text form in the middle. The aim is to use css opacity transitions to switch background images by fading. (I'll be switching background images quite often)
Currently got it working nicely by using two layers of background images. To display a new image at the bottom layer, we fade out the top layer (opacity 1 to 0). To display a new image at the top layer, we fade in the top layer (opacity 0 to 1).
The problem is that my text form fades along with the top layer - which I want it to stay visible. How do I make it unaffected by the fading?
Attempts to solve this:
Setting z-index of either #searchForm input or .formDiv to 999999, thinking that this will put the form right at the top of the hierachy so it would be unaffected by transitions below. However, didn't work.
Setting position of #searchForm input or .formDiv to absolute. From http://www.w3schools.com/css/css_positioning.asp,
"Absolutely positioned elements are removed from the normal flow. The document and other elements behave like the absolutely positioned element does not exist."
This stackoverflow post CSS3 Alternating table rows opacity affects text as well as background says that child elements are affected by opacity too. I tried placing the div containing the background images inside the formDiv class so that it wouldn't be a child. But this will get the form covered by the top image, even without opacity on.
function changeBackground(newUrl) {
//check which layer is currently activated
if ($('#background-image-top').hasClass('transparent')) {
//place new image over top layer
$('#background-image-top').css('background-image', 'url(' + newUrl + ')');
//fade in new image
$('#background-image-top').toggleClass('transparent');
} else {
//place new image over bottom layer
$('#background-image-bot').css('background-image', 'url(' + newUrl + ')');
//fade out old image
$('#background-image-top').toggleClass('transparent');
}
}
#background-image-top {
background-image: url("../images/default.jpg");
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
-webkit-background-size:cover;
-moz-background-size:cover;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
-webkit-transition: opacity 1s ease-in-out;
-moz-transition: opacity 1s ease-in-out;
-o-transition: opacity 1s ease-in-out;
transition: opacity 1s ease-in-out; }
#background-image-bot {
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
-webkit-background-size:cover;
-moz-background-size:cover;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;}
.transparent {
opacity: 0.25;}
.formDiv {
background-color: red;
max-width: 500px;
height: 50px;
margin-left: auto;
margin-right: auto;
margin-top: 35%;}
#searchForm input {
width: 300px;
height: 30px;
font-size: 18px;}
I have made a little fiddle where you might can get inspiration, i just use a class to toggle the opacity and them put under the form with position absolute, hope it helps :)
and then use a click function with jQuery to toggle the effect.
the css:
form {
position: relative;
z-index: 10;
}
#background1 {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: lightblue;
-webkit-transition: all 0.5s ease-in-out;
-moz-transition: all 0.5s ease-in-out;
-ms-transition: all 0.5s ease-in-out;
-o-transition: all 0.5s ease-in-out;
transition: all 0.5s ease-in-out;
}
#background2 {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: lightgreen;
-webkit-transition: all 0.5s ease-in-out;
-moz-transition: all 0.5s ease-in-out;
-ms-transition: all 0.5s ease-in-out;
-o-transition: all 0.5s ease-in-out;
transition: all 0.5s ease-in-out;
}
.hide {
opacity: 0;
}
http://jsfiddle.net/9jb68w2o/
+++ If you feel better to use css opacity transitions to switch background images by using only one div ie) #background1, you can use this code
$(document).ready(function() {
$('#toggle').click(function(e) {
e.preventDefault();
$('#background1').toggleClass('color1');
});
});
body {
background-color: #f8f8f8;
color: #555;
}.container {
position: relative;
margin: 30px auto;
padding: 20px;
width: 200px;
height: 150px;
background-color: #fff
}
form {
position: relative;
z-index: 10;
}
input[type=text] {
margin: 10px 0;
padding: 5px;
width: calc(100% - 10px);
font-size: 15px;
outline: none;
}
input[type=submit] {
width: 100%;
text-transform: uppercase;
font-size: 15px;
background-color: #333;
color: #fff;
border: none;
cursor: pointer;
}
#background1 {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: lightblue;
-webkit-transition: all 0.5s ease-in-out;
-moz-transition: all 0.5s ease-in-out;
-ms-transition: all 0.5s ease-in-out;
-o-transition: all 0.5s ease-in-out;
transition: all 0.5s ease-in-out;
}
#background1.color1 {
background-color: lightgreen;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<div class="container">
<div id="background1"></div>
<form>
<h2>Awesome form!</h2>
<input type="text" placeholder="Some text here" />
<input id="toggle" type="submit" value="Change now!" />
</form>`enter code here`
</div>
Here is the jsfiddle: http://jsfiddle.net/kimimsc/LEjBR/
<section id="portfolioContent" class="blueTheme">
<div class="container mmContainer">
<div class="pullLeft portfolioVignette">
<div class="portfolioVignetteFilter">
<p>Test1</p>
</div>
</div>
</div>
#portfolioContent {}
.portfolioVignette {background-color: gold; width: 500px; height: 300px; border-radius: 20px; margin: 20px;}
.portfolioVignette > .portfolioVignetteFilter {height: 300px; width:0px; border-radius: 20px; background-color: rgba(204,204,204,0.5); -webkit-transition: width 0.5s ease-out; -moz-transition: width 0.5s ease-out; -o-transition: width 0.5s ease-out; transition: width 0.5s ease-out;}
.portfolioVignette:hover > .portfolioVignetteFilter {height: 300px; width: 500px; border-radius: 20px; background-color: rgba(204,204,204,0.5); -webkit-transition: width 0.5s ease-out; -moz-transition: width 0.5s ease-out; -o-transition: width 0.5s ease-out; transition: width 0.5s ease-out;}
So first of all, if you look at the jsfiddle that I provided you will see what I've done.
Bascily I have a div (in yellow) and I am using css3 transition to animate the width change on another div (grey with 0.5 alpha). The grey div appears over the yellow on hover and disappears when the hover action is over. You can also see that there is a text element 'Test1' that is always displayed.
So what I want to do is when there is no hover I would like to have only the yellow element without anything else (so no text aswell) and on hover I would like the text to come with the grey element.
I don't think this is the right way to do it but I couldn't find anything that could help me.
If I haven't been clear enough. tell me if you have any questions.
Thank you for your help guys,
I did something similar, but interpreted your problem a little differently:
.portfolioVignette p {
width:0;
margin-left:0;
overflow: hidden;
transition: width .5s ease-out;
transition: margin-left .5s ease-out;
}
.portfolioVignette:hover p {
width:100%;
margin-left:90%;
}
Something like this should do it:
.portfolioVignette p {
width: 0;
overflow: hidden;
transition: width 0.5s ease-out;
}
.portfolioVignette:hover p {
width: 100%;
}
See it here: http://jsfiddle.net/shomz/LEjBR/6/
I have a div that have img with id and another div inside it
I want to hide the info div (you can see in code) on load of the page and then show it again on hover of the img - I also want the info div to slide right nicely..
Thanks in advance for helping :)
the HTML
<div class="wrapper">
<img id="logo" src="img/logo.png" alt="logo">
<div id="info">
info- blah <br>
blah & blah .<br>
email#gmail.com
</div>
</div>
The CSS
.wrapper{
float: left;
opacity: 0.4;
margin-top: -30px;
margin-left: 5px;
transition: opacity .25s ease-in-out;
-moz-transition: opacity .25s ease-in-out;
-webkit-transition: opacity .25s ease-in-out;
}
#logo {
width: 39px;
}
.wrapper:hover{
opacity: 0.6;
}
#info {
margin-left: 2px;
margin-top: 5px;
float:right;
font-size: 9px;
}
What is the jQuery I need for this?
Here's one way to do it.
I don't know if that's what you wanted, but since you're already using CSS3, you don't need jQuery for that:
.wrapper {
float: left;
opacity: 0.4;
margin-left: 5px;
transition: opacity .25s ease-in-out;
-moz-transition: opacity .25s ease-in-out;
-webkit-transition: opacity .25s ease-in-out;
overflow:visible;
position:relative;
}
.wrapper:hover {
opacity: 0.6;
}
#info {
margin-left: 2px;
margin-top: 5px;
float:right;
font-size: 9px;
opacity:0;
transition: all .5s ease-in-out;
-moz-transition: all .5s ease-in-out;
-webkit-transition: all .5s ease-in-out;
left:50%;
position:absolute;
top:0;
}
.wrapper:hover #info {
left:100%;
opacity:1;
}
http://jsfiddle.net/Y2B2v/
Place your .wrapper with the same image height. Place an overflow:hidden to hide text which is under.
After you must just change height in .wrapper:hover to show the text.
If you want a nice transition, you can adjust that with
.wrapper:hover{
opacity: 0.6;
height:100px;
transition: height 1;
-webkit-transition: height 1s; /* Safari */
}
like this : http://jsfiddle.net/AW9qh/2/