.galeria {
    position: relative;
    width: 100%;
}

.galeria:hover .overlay-galeria {
    opacity: 1;
}

.galeria-fotos{
    text-decoration: none;
    font-family: "Montserrat", sans-serif;
    font-weight: bold !important;
    color: #fff;
}

.overlay-galeria {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    width: 100%;
    opacity: 0;
    transition: .5s ease;
    background-color: #18196D;
}

.img-galeria {
    display: block;
    width: 100%;
    height: auto;
}

.texto {
    color: white;
    font-size: 20px;
    position: absolute;
    font-family: 'Montserrat', sans-serif;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    text-align: center;
}