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HTML

              
                <!--
Dans cet exemple on peut cliquer sur une des deux vignette carrée pour les agrandir. Une fois agrandie, on peut également faire défiler l'autre image. Il est ainsi possible de faire une galerie d'images que l'on peut agrandir et faire défiler.
-->



<div class="conteneur-flexbox">
  <div class="box">
		<p class="click">CLICK TO ZOOM</p>
		<!--le lien vers la grande image qui sera affichée lors du clic sur la vignette carrée -->
			<a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/muller-full.jpg" data-lightbox="image-1" data-title="Josef Müller-Brockmann, né le 19 mai 1914 à Rapperswil et mort le 30 août 1996 à Zurich, est un graphiste et créateur de caractères suisse.">
				<!--le lien vers la petite image carrée qui sert de vignette -->
			<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/muller.jpg"></a>
	</div>
	
	<div class="box">
		<p class="click">CLICK TO ZOOM</p>
		<!--le lien vers la grande image qui sera affichée lors du clic sur la vignette carrée -->
			<a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/Karl-Gerstner-full.jpg" data-lightbox="image-1" data-title="Karl Gerstner (2 July 1930 – 1 January 2017) was a Swiss designer, typographer, author and artist.">
				<!--le lien vers la petite image carrée qui sert de vignette -->
			<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/Karl-Gerstner.jpg"></a>
	</div>
	
</div>

              
            
!

CSS

              
                body {
	background-color: #F9E79F;
}

/*L'OPACITÉ DE LA VIGNETTE CHANGE LORS DU HOVER*/
img:hover {
	opacity: 0.8;
	transition: opacity 0.9s;
}


/*LE STYLE DU TEXTE CLICK TO ZOOM*/
.click {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	margin: auto;
	text-align: center;
	z-index: 10;
	color: white;
	background-color: #0708a8;
	font-size: 1em;
	font-family: "Lucida Console", Courier, monospace;
	opacity: 0; /*opacity 0 car le texte ne doit pas être affiché avant le hover*/
}

.box:hover .click {
	opacity: 1; /*le texte passe à opacity 1 et devient visible*/
	transition: opacity 0.9s;
}


/*flexbox*/

.conteneur-flexbox {
  max-width: 650px;
  margin: 100px auto 0 auto;
  padding: 0px 0;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
}


.box {
	position: relative;
  width: 300px;
  height: 300px;
	border: 1px solid #838383;
}



/*LIGHTBOX*/

body:after {
    content: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/close.png) url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/loading.gif) url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/prev.png) url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/next.png);
    display: none;
}
body.lb-disable-scrolling {
    overflow: hidden;
}
.lightboxOverlay {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 9999;
    background-color: black;
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=80);
    opacity: 0.8;
    display: none;
}
.lightbox {
    position: absolute;
    left: 0;
    width: 100%;
    z-index: 10000;
    text-align: center;
    line-height: 0;
    font-weight: normal;
}
.lightbox .lb-image {
    display: block;
    height: auto;
    max-width: inherit;
    max-height: none;
    border-radius: 3px;
    /* Image border */
    border: 4px solid white;
}
.lightbox a img {
    border: none;
}
.lb-outerContainer {
    position: relative;
    *zoom: 1;
    width: 250px;
    height: 250px;
    margin: 0 auto;
    border-radius: 4px;
    /* Background color behind image.
     This is visible during transitions. */
    background-color: white;
}
.lb-outerContainer:after {
    content: "";
    display: table;
    clear: both;
}
.lb-loader {
    position: absolute;
    top: 43%;
    left: 0;
    height: 25%;
    width: 100%;
    text-align: center;
    line-height: 0;
}
.lb-cancel {
    display: block;
    width: 32px;
    height: 32px;
    margin: 0 auto;
    background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/loading.gif) no-repeat;
}
.lb-nav {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    z-index: 10;
}
.lb-container > .nav {
    left: 0;
}
.lb-nav a {
    outline: none;
    background-image: url('data:image/gif;base64,R0lGODlhAQABAPAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');
}
.lb-prev,
.lb-next {
    height: 100%;
    cursor: pointer;
    display: block;
}
.lb-nav a.lb-prev {
    width: 34%;
    left: 0;
    float: left;
    background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/prev.png) left 48% no-repeat;
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=0);
    opacity: 0;
    -webkit-transition: opacity 0.6s;
    -moz-transition: opacity 0.6s;
    -o-transition: opacity 0.6s;
    transition: opacity 0.6s;
}
.lb-nav a.lb-prev:hover {
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=100);
    opacity: 1;
}
.lb-nav a.lb-next {
    width: 64%;
    right: 0;
    float: right;
    background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/next.png) right 48% no-repeat;
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=0);
    opacity: 0;
    -webkit-transition: opacity 0.6s;
    -moz-transition: opacity 0.6s;
    -o-transition: opacity 0.6s;
    transition: opacity 0.6s;
}
.lb-nav a.lb-next:hover {
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=100);
    opacity: 1;
}
.lb-dataContainer {
    margin: 0 auto;
    padding-top: 5px;
    *zoom: 1;
    width: 100%;
    -moz-border-radius-bottomleft: 4px;
    -webkit-border-bottom-left-radius: 4px;
    border-bottom-left-radius: 4px;
    -moz-border-radius-bottomright: 4px;
    -webkit-border-bottom-right-radius: 4px;
    border-bottom-right-radius: 4px;
}
.lb-dataContainer:after {
    content: "";
    display: table;
    clear: both;
}
.lb-data {
    padding: 0 4px;
    color: white;
    font-family: "work_sans", sans-serif;
}
.lb-data .lb-details {
    width: 85%;
    float: left;
    text-align: left;
    line-height: 1.1em;
    font-family: "work_sans", sans-serif;
}
.lb-data .lb-caption {
    font-family: "work_sans", sans-serif;
    font-size: 13px;
    font-weight: bold;
    line-height: 1em;
}
.lb-data .lb-caption a {
    color: #4ae;
}
.lb-data .lb-number {
    display: block;
    clear: left;
    padding-bottom: 1em;
    font-size: 12px;
    color: #999999;
}
.lb-data .lb-close {
    display: block;
    float: right;
    width: 30px;
    height: 30px;
    background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/265602/close.png) top right no-repeat;
    text-align: right;
    outline: none;
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=70);
    opacity: 0.7;
    -webkit-transition: opacity 0.2s;
    -moz-transition: opacity 0.2s;
    -o-transition: opacity 0.2s;
    transition: opacity 0.2s;
}
.lb-data .lb-close:hover {
    cursor: pointer;
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=100);
    opacity: 1;
}
              
            
!

JS

              
                
              
            
!
999px

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