body {
	margin:0;
}

.sertificate {
	margin:30px; 
	float:left;
	cursor:pointer;
	max-height:200px;
	border: 1px solid #2c3e50;
}
.sertificate:hover{
	-webkit-box-shadow: 8px 6px 44px 4px rgba(0,192,205,0.53);
	-moz-box-shadow: 8px 6px 44px 4px rgba(0,192,205,0.53);
	box-shadow: 8px 6px 44px 4px rgba(0,192,205,0.53);
}



.popup {
	position: absolute;
	height:100%;
	width:100%;
	top:0;
	left:0;
	right: 0;
	display:none;
	margin:  0 auto;
}

.popup_bg {
	background:rgba(0,0,0,0.4);
	position:fixed;
	z-index:3;
	height:100%;
	width:100%;
}


.popup_img {
	position: fixed;
	margin:0 auto;
	z-index:3;
	right: 0;
	left:0;
	max-height:94%;
	max-width:94%;
	margin:0 auto;
}

@media(max-width: 1024px){

.sertificate {
    max-height: 170px;
}
}