.grid-item {
    width: 165px;
    padding: 2px;
}
.grid-item--width2 { width: 330px; }


@media (min-width: 576px) {
    .grid-item { width: 250px; }
    .grid-item--width2 { width: 500px; }
}

@media (min-width: 768px) {
    .grid-item { width: 200px; }
    .grid-item--width2 { width: 400px; }
}

@media (min-width: 992px) {
    .grid-item { width: 310px; }
    .grid-item--width2 { width: 620px; }
}

@media (min-width: 1200px) {
    .grid-item { width: 396px; }
    .grid-item--width2 { width: 792px; }
}

.gallery-image-item::before {
    content: ' ';
    position: absolute;
    display: block;
    transition: background-color 0.4s ease;
    -webkit-transition: background-color 0.4s ease;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.gallery-image-item:hover::before {
    background-color: rgba(255, 255, 255, 0.3);
}

.tatsu-section.section-grey {
    background-color: rgba(234, 236, 237, 1);
}

.tatsu-section.section-white {
    background-color: rgba(255, 255, 255, 1);
}