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Scale image to the center of the screen from the gallery using JS and CSS

There is a cubic gallery of images and my requirement is that on mouse hover any image should scale in the middle of the screen. I went through some solutions but they scale image at the exact location it is currently present on the screen.
While the image is scaled all the remaining gallery should go in background.
Please suggest me an approach for doing this And please let me know in case of any code to be posted.

So as suggested by Joramanda on adding above suggestion this seems to be working fine. Below is the css so the left right top and z index were adjusted to generate the desired effect.
.polaroid {
width: 33%;
background-color: white;
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0
rgba(0, 0, 0, 0.19);
float: left;
border: thin;
-webkit-transition: all 200ms ease-in;
-webkit-transform: scale(1);
-ms-transition: all 200ms ease-in;
-ms-transform: scale(1);
-moz-transition: all 200ms ease-in;
-moz-transform: scale(1);
transition: all 200ms ease-in;
transform: scale(1);
}
img {
width: 100%
-webkit-transition: all 200ms ease-in;
-webkit-transform: scale(1);
-ms-transition: all 200ms ease-in;
-ms-transform: scale(1);
-moz-transition: all 200ms ease-in;
-moz-transform: scale(1);
transition: all 200ms ease-in;
transform: scale(1);
}
.container {
text-align: center;
padding: 10px 20px;
float: left;
-webkit-transition: all 200ms ease-in;
-webkit-transform: scale(1);
-ms-transition: all 200ms ease-in;
-ms-transform: scale(1);
-moz-transition: all 200ms ease-in;
-moz-transform: scale(1);
transition: all 200ms ease-in;
transform: scale(1);
}
.polaroid:HOVER {
position:absolute;
left: 20%;
right: 20%;
top:20%;
z-index:10;
box-shadow: 0px 0px 150px #000000;
z-index: 2;
-webkit-transition: all 200ms ease-in;
-webkit-transform: scale(1.9);
-ms-transition: all 200ms ease-in;
-ms-transform: scale(1.5);
-moz-transition: all 200ms ease-in;
-moz-transform: scale(1.5);
transition: all 200ms ease-in;
transform: scale(1.5);
}

Transition on :hover:before not working properly

Basically what I'm trying to do is have a transition with transform applied on the :hover:before element so that when you hover with your mouse over ava.png the :before element smoothly appears instead of instantly.
I've tried adding the transition code to the :hover:after class (as seen in the code below) and I tried one of the solutions I found on StackOverflow, changing :hover to :before and adding the content + transition to that class. Needless to say none of my attempts worked or I wouldn't be here right now. (:D)
If anyone could take the time to help me out that'd be highly appreciated, thanks!
#header .inner {
-moz-transition: -moz-transform 1.5s ease, opacity 2s ease;
-webkit-transition: -webkit-transform 1.5s ease, opacity 2s ease;
-ms-transition: -ms-transform 1.5s ease, opacity 2s ease;
transition: transform 1.5s ease, opacity 2s ease;
-moz-transition-delay: 0.25s;
-webkit-transition-delay: 0.25s;
-ms-transition-delay: 0.25s;
transition-delay: 0.25s;
-moz-transform: scale(1);
-webkit-transform: scale(1);
-ms-transform: scale(1);
transform: scale(1);
opacity: 1;
position: relative;
z-index: 1;
}
#slide1 {
position: relative;
margin-left: 147px;
margin-top: 0px;
z-index: 100;
width: 98px;
height: 92px;
display: inline-block;
background-image: url("https://www.upload.ee/image/6050955/ava.png");
}
#slide1:hover {
position: relative;
}
#slide1:hover:before {
content: url("https://www.upload.ee/image/6050956/ava_background_hoover.png");
display: block;
z-index: -1;
position: absolute;
margin-left: -150px;
margin-top: -50px;
-moz-transition: -moz-transform 1.5s ease, opacity 2s ease;
-webkit-transition: -webkit-transform 1.5s ease, opacity 2s ease;
-ms-transition: -ms-transform 1.5s ease, opacity 2s ease;
transition: transform 1.5s ease, opacity 2s ease;
-moz-transform: scale(1);
-webkit-transform: scale(1);
-ms-transform: scale(1);
transform: scale(1);
}
#slide2 {
position: relative;
margin-left: 0px;
margin-top: 0px;
z-index: 100;
width: 140px;
height: 160px;
display: inline-block;
background-image: url("https://www.upload.ee/image/6050954/arrow.png");
}
<div class="inner">
<a id="slide1" href="/insider-informatie/over-mij.html"></a>
<div id="slide2"></div>
<h1>Header 1</h1>
<p>My text</p>
</div>

To animate transition you need a to have some kind of a change in the elements properties. This means that the element should be part of the page, displayed (ie no display: none) and visible (no visibility: hidden), but somehow invisible / transparent (opacity: 0 for example).
In your case, you don't create the :before element unless you want to display it. To solve that render the :before with scale(0), and on over change it to scale(1):
#header .inner {
-moz-transition: -moz-transform 1.5s ease, opacity 2s ease;
-webkit-transition: -webkit-transform 1.5s ease, opacity 2s ease;
-ms-transition: -ms-transform 1.5s ease, opacity 2s ease;
transition: transform 1.5s ease, opacity 2s ease;
-moz-transition-delay: 0.25s;
-webkit-transition-delay: 0.25s;
-ms-transition-delay: 0.25s;
transition-delay: 0.25s;
-moz-transform: scale(1);
-webkit-transform: scale(1);
-ms-transform: scale(1);
transform: scale(1);
opacity: 1;
position: relative;
z-index: 1;
}
#slide1 {
position: relative;
margin-left: 147px;
margin-top: 0px;
z-index: 100;
width: 98px;
height: 92px;
display: inline-block;
background-image: url("https://www.upload.ee/image/6050955/ava.png");
}
#slide1:hover {
position: relative;
}
#slide1:before {
content: url("https://www.upload.ee/image/6050956/ava_background_hoover.png");
display: block;
z-index: -1;
position: absolute;
margin-left: -150px;
margin-top: -50px;
-moz-transition: -moz-transform 1.5s ease, opacity 2s ease;
-webkit-transition: -webkit-transform 1.5s ease, opacity 2s ease;
-ms-transition: -ms-transform 1.5s ease, opacity 2s ease;
transition: transform 1.5s ease, opacity 2s ease;
-moz-transform: scale(0);
-webkit-transform: scale(0);
-ms-transform: scale(0);
transform: scale(0);
}
#slide1:hover:before {
-moz-transform: scale(1);
-webkit-transform: scale(1);
-ms-transform: scale(1);
transform: scale(1);
}
#slide2 {
position: relative;
margin-left: 0px;
margin-top: 0px;
z-index: 100;
width: 140px;
height: 160px;
display: inline-block;
background-image: url("https://www.upload.ee/image/6050954/arrow.png");
}
<div class="inner">
<a id="slide1" href="/insider-informatie/over-mij.html"></a>
<div id="slide2"></div>
<h1>Header 1</h1>
<p>My text</p>
</div>

css3 transition is not smooth in safari

I'm rebuilding someone's else CSS3 transition to make it work across Safari, Chrome, and Firefox. In their version (mouse over the package images), the transition works well in Safari, but not in the other two: The elements get stuck in the "up" position. In my version, the transition runs smoothly in FF and Chrome, but is jerky in Safari (plus it's not rotating). Any ideas? My CSS is below.
.package-down {
display: block;
position: relative;
height: 100%;
float: left;
width: 33.333%;
margin: 0 0 0 0;
transform: rotate(0deg) ;
-webkit-transition: margin .1s ease, transform .25s ease;
-moz-transition: margin .1s ease, transform .25s ease;
-o-transition: margin .1s ease, transform .25s ease;
transition: margin .1s ease, transform .25s ease;
}
.package-up {
display: block;
position: relative;
height: 100%;
float: left;
width: 33.333%;
margin: -50px 0 0 0;
transform: rotate(-2deg);
-webkit-transition: margin .1s ease, transform .25s ease-out;
-moz-transition: margin .1s ease, transform .25s ease-out;
-o-transition: margin .1s ease, transform .25s ease-out;
transition: margin .1s ease, transform .25s ease-out;
}

While I agree that jQuery is not necessary for this problem, the real issue appears to be an inconsistent use of browser prefixes.
You needed to add prefixes for transform: rotate() on both .package-down and .package-up.
Also this:
-webkit-transition: margin .1s ease, transform .25s ease-out;
Should be this:
-webkit-transition: margin .1s ease, -webkit-transform .25s ease-out;
And it would be a similar adjustment for all the other prefixed transition properties.
See Codepen
$(function() {
$('.package-down').hover(function() {
$('.package-down').toggleClass('package-up');
});
});
img {
margin: 0;
max-width: 100%;
}
.main-packages-wrapper {
position: relative;
width: 80%;
min-height: 575px;
display: block;
padding-top: 80px;
z-index: 1; }
.package.original {
margin-right: -15px;
margin-left: -15px;
z-index: 2; }
.package.original img {
-webkit-transform: scale(1.2);
-moz-transform: scale(1.2);
-ms-transform: scale(1.2);
-o-transform: scale(1.2);
transform: scale(1.2);
}
.package-down {
display: block;
position: relative;
height: 100%;
float: left;
width: 33.333%;
margin: 0 0 0 0;
-webkit-transform: rotate(0deg) ;
-moz-transform: rotate(0deg) ;
-o-transform: rotate(0deg) ;
transform: rotate(0deg) ;
-webkit-transition: margin .1s ease, -webkit-transform .25s ease;
-moz-transition: margin .1s ease, -moz-transform .25s ease;
-o-transition: margin .1s ease, -o-transform .25s ease;
transition: margin .1s ease, transform .25s ease;
}
.package-up {
display: block;
position: relative;
height: 100%;
float: left;
width: 33.333%;
margin: -50px 0 0 0;
-webkit-transform: rotate(-2deg);
-moz-transform: rotate(-2deg);
-o-transform: rotate(-2deg);
transform: rotate(-2deg);
-webkit-transition: margin .1s ease, -webkit-transform .25s ease-out;
-moz-transition: margin .1s ease, -moz-transform .25s ease-out;
-o-transition: margin .1s ease, -o-transform .25s ease-out;
transition: margin .1s ease, transform .25s ease-out;
}
<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'></script>
<body>
<div class="primary-content">
<section class="main-packages-wrapper">
<div class="package-down multigrain">
<img src="http://www.batterworld.com/wp-content/themes/batterworld/images/package_multigrain.png">
</div>
</section>
</div><!--END PRIMARY CONTENT-->

I'm actually astonished that your jQuery hover function does work at all, because what you'd actually need is mouseenter -> addClass and mouseleave -> removeClass, but it might be me not exactly being aware of how jQuery's .hover() works.
Nonetheless, there is absolutely no need for jQuery or even Javascript to change styles on mouseover. You have the pseudo-selector :hover for exactly this purpose: Put the styles your want to transition to into
.package-down:hover { /* properties to transition to */ }
Next, do not repeat styles that the element already has and that do not change.
Last, if your problem is that not all property transition are taking an equal amount of time, don't specify so:
transition: margin .1s ease, transform .25s ease-out;
This will make the margin changes take 0.1s, but the rotation to take 0.25s.
Please describe more concisely what your transition is to look/perform like.
http://codepen.io/anon/pen/aOJmKe
Also, please be aware that you are not doing a css animation here, but a css transition. Read more about the differences here:
CSS: Animation vs. Transition

Yup, the javascript was definitely extraneous. All that was needed were CSS transitions applied to the :hover state of the elements. I did end up repeating some transition code, because that enabled the transitions to run in reverse when the cursor leaves the hovered element. Thanks! Finished codepen here.
.package.original img {
-webkit-transform: scale(1.2);
-moz-transform: scale(1.2);
-ms-transform: scale(1.2);
-o-transform: scale(1.2);
}
.package {
display: block;
position: relative;
height: 100%;
float: left;
width: 33.33%;
z-index: 1;
-webkit-transition: margin .15s ease-out;
-moz-transition: margin .15s ease-out;
-o-transition: margin .15s ease-out;
transition: margin .15s ease-out;
}
.package:hover {
display: block;
position: relative;
height: 100%;
float: left;
width: 33.33%;
z-index: 1;
margin: -50px 0 0 0;
-webkit-transform: rotate(-2deg);
-webkit-transition: margin .15s ease-out;
-moz-transition: margin .15s ease-out;
-o-transition: margin .15s ease-out;
transition: margin .15s ease-out;
}
.original:hover{
margin-left: -30px;
-webkit-transition: margin .15s ease-out;
-moz-transition: margin .15s ease-out;
-o-transition: margin .15s ease-out;
width: 33.33%;
z-index: 2;
}

How to mask an image within a given div by CSS?

Basically, I am doing a project which looks like this:
when a mouse moves over an image, the image inside a div will be enlarged through an animation, but only the part of image inside the div should be displayed, and the outer part should be clipped. Is there any way to clip the image, according to the width and height of the div? In my case, it only enlarged when the mouse hovers over it, but it is not clipped.
$('.thumbnail').on('mouseover',
function() {
$(this).find('.thumb_pic').addClass('hover_effect');
}
);
$('.thumbnail').on('mouseout',
function() {
$(this).find('.thumb_pic').removeClass('hover_effect');
}
);
.thumbnail {
display: inline-block;
position: relative;
}
.thumb_pic {
width: 500px;
padding: 5px;
transition: all .5s ease-in-out;
-o-transition: all .5s ease-in-out;
-ms-transition: all .5s ease-in-out;
-moz-transition: all .5s ease-in-out;
-webkit-transition: all .5s ease-in-out;
}
.hover_effect {
transform: scale(1.2, 1.2);
-o-transform: scale(1.2, 1.2);
-ms-transform: scale(1.2, 1.2);
-moz-transform: scale(1.2, 1.2);
-webkit-transform: scale(1.2, 1.2);
}
.mask {
opacity: 0;
position: absolute;
top: 5px;
left: 5px;
width: 500px;
height: 500px;
background-color: rgba(0, 0, 0, 0.75);
transition: opacity .5s ease-in-out;
-o-transition: opacity .5s ease-in-out;
-ms-transition: opacity .5s ease-in-out;
-moz-transition: opacity .5s ease-in-out;
-webkit-transition: opacity .5s ease-in-out;
}
.mask:hover {
opacity: 1;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="thumbnail">
<img class="thumb_pic" src="/thumb_img/thumb.png" />
<div class="mask"></div>
</div>

.thumbnail{
overflow:hidden;
width: 500px;
height: 500px;
}
you don't need the mask div. but why do you use jquery and not css? use .thumb_pic:hover instead of .hover_effect and remove your javascript.

I think the property you're looking for is "overflow: hidden"

NOTE: This isn't an answer, only a suggestion to make your code a little more efficient
Instead of using JQuery mouseover and mouseout do it with css
Instead of
.hover_effect {
transform: scale(1.2, 1.2);
-o-transform: scale(1.2, 1.2);
-ms-transform: scale(1.2, 1.2);
-moz-transform: scale(1.2, 1.2);
-webkit-transform: scale(1.2, 1.2);
}
Try
.thumbnail:hover .thumb_pic {
transform: scale(1.2, 1.2);
-o-transform: scale(1.2, 1.2);
-ms-transform: scale(1.2, 1.2);
-moz-transform: scale(1.2, 1.2);
-webkit-transform: scale(1.2, 1.2);
}

change color and shape of div on click

When I click the div, I'm trying to make the div turn into a green 30x30 circle over a course of 2 seconds. And then 3 seconds after the animation is done running, I want the red area go back to its original state.
With my code so far, I'm able to click the div and change it's size to 30x30 and shape to a circle
Here's my code so far:
#blue-box {
height: 100px;
width: 100px;
background: blue;
/* transition:background-color .5s ease-in; */
transition: background-color 0.5s ease;
-webkit-transition: -webkit-transform 0.5s ease-in-out;
-webkit-transition: -webkit-transform 0.5s ease-in-out;
-webkit-transition: -webkit-transform 0.5s ease-in-out;
-webkit-transition: -webkit-transform 0.5s ease-in-out;
transition: transform 0.5s ease-in-out, background-color 2s ease 3s;
}
.box-change {
background-color: green;
border-radius: 100%;
-webkit-transform: scale(.3, .3);
-moz-transform: scale(.3, ,.3);
-o-transform: scale(.3, .3);
-ms-transform: scale(.3, .3);
transform: scale(.3, .3);
}
var box = $('#blue-box');
box.on('click', function(){
box.toggleClass('box-change');
if (box.hasClass('box-change'))
console.log("testing123");
else
console.log("testing testing!");
});
http://jsfiddle.net/gatordh7/gxes2ep3/
To the #blue-box div, I tried including: "transition:background-color .5s ease-in", and then setting the background-color to green on the .box-change class I toggled when the div was clicked, but I still can't figure this out.
What am I doing wrong?

Fixed in this one http://jsfiddle.net/gxes2ep3/3/
var box = $('.blue-box');
box.on('click', function(){
box.toggleClass('box-change');
if (box.hasClass('box-change'))
console.log("testing123");
else
console.log("testing testing!");
});
You were using id for the box, ids have a higher priority than classes. Also, the css background-color was not the same in blue box and in box-change rules. Ans you had a 3s delay for the color