.content_ntgalerie_titre{float: left; width: 100%; text-align: center;}
.content_ntgalerie_titre a{display: inline-block; padding: 10px 20px 10px 20px; color:#999999; font: 14px/30px 'Mulish', sans-serif; background: #f9f9f9;}
.content_ntgalerie_titre a.on, 
.content_ntgalerie_titre a:hover{color:#ffffff; background: #dcc397; text-decoration: underline;}

.content_ntgalerie{width: 100%;display: -webkit-box;  display: -moz-box;  display: -ms-flexbox;  display: -webkit-flex; display: flex !important;  -webkit-flex-direction: row;  -moz-flex-direction: row;  -ms-flex-direction: row;  flex-direction: row !important; float: none; display: inline-block; position: relative; height: 300px;}
.content_ntgalerie .case_ntgalerie{flex: 1;display: inline-block; position: relative; margin: 5px; background: #000000;}

.content_ntgalerie .case_ntgalerie a{display: block; height: 100%; width: 100%; position: relative;}
.content_ntgalerie .case_ntgalerie a:hover{opacity: 0.8;}

.content_ntgalerie .case_ntgalerie a::after{content:""; opacity: 0; transition : all 0.2s linear;}
.content_ntgalerie .case_ntgalerie a:hover::after{content:""; width: 50px; z-index: 2; height: 50px; background: url("../../img/icone-plus.jpg"); position: absolute; top: 10px; left: 10px;opacity: 1; transition : all 0.2s linear;}

@media screen and (max-width: 767px) 
{
	.content_ntgalerie{height: 200px;}
}
@media screen and (max-width: 540px) 
{
	.content_ntgalerie{height: 150px;}
}