#gallery .vc_item {
    position: relative;
}
#gallery .vc_item:hover:before {
    transition: all 1s;
    opacity: 1;
}
#gallery .vc_item:before {
    background: rgba(255,255,255,0.5);
    font-family: fontawesome;
    pointer-events: none;
    border-radius: 100%;
    padding: 10px 15px;
    position: absolute;
    content: '\f0c1';
    font-size: 19px;
    margin: auto;
    color: white;
    z-index: 100;
    width: 55px;
    opacity: 0;
    top: 50%;
    margin-top: -25px;
    right: 0;
    left: 0;
}