.serf-bg { text-align: center;}
.foto {

}
.sert-item {
    position: relative;
    display: inline-block;
    margin:0 4px ;
}
.serf a.foto { margin: 0;}
.foto img {
    padding:3px;
    box-shadow: 1px 0px 14px #d8d8d8, 0px 1px 14px #d8d8d8;
    border:1px solid #aaa;
}
.sert-item .popup_text {
    display:none;
    border:1px solid #0b3d92;
    padding:5px 10px;
    background:rgba(255,255,255,.97);
    box-shadow:0 17px 29px rgba(0,0,0,.35);
    color:#676767;
    font-size:12px;
    position:absolute;
    top:240px;
    left:0;
    z-index:20;
    border-radius:10px;
    line-height:1.2em;
}
.sert-item:hover .popup_text {
    display:block;
}