.js .boxgallery,
.js .boxgallery div {
    position: absolute;
}

.js .boxgallery,
.bg-tile,
.bg-img {
    overflow: hidden;
}

.js .boxgallery,
.js .panel {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.panel {
    z-index: 0;
    -webkit-perspective: 1200px;
    perspective: 1200px;
}

.bg-tile {
    width: 50%;
    height: 50%;
}

.bg-tile:nth-child(2),
.bg-tile:nth-child(4) {
    left: 50%;
}

.bg-tile:nth-child(3),
.bg-tile:nth-child(4) {
    top: 50%;
}

.bg-img {
    width: 100%;
    height: 100%;
    background: #999;
}

.bg-img img {
    position: absolute;
    display: block;
    height: 200%;
}

@media screen and (min-aspect-ratio: 1280/850) {
    .bg-img img {
        width: 200%;
        height: auto;
    }
}

.bg-tile:nth-child(2) .bg-img img,
.bg-tile:nth-child(4) .bg-img img {
    left: -100%;
}

.bg-tile:nth-child(3) .bg-img img,
.bg-tile:nth-child(4) .bg-img img {
    top: -100%;
}

/* Navigation Arrow */

.boxgallery>nav span {
    position: absolute;
    top: 50%;
    z-index: 1000;
    display: block;
    outline: none;
    text-align: center;
    cursor: pointer;
    background: #15151552;
}

.boxgallery>nav span.prev {
    position: absolute;
    top: 50%;
    left: 5px;
    width: 65px;
    height: 65px;
    line-height: 65px;
    position: absolute;
    z-index: 100;
    display: inline-block;
    background: #15151530;
    color: #fff;
    text-align: center;
    border-radius: 100%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
}

.boxgallery>nav span.next {
    position: absolute;
    top: 50%;
    right: 5px;
    width: 65px;
    height: 65px;
    line-height: 65px;
    position: absolute;
    z-index: 100;
    display: inline-block;
    background: #15151530;
    color: #fff;
    text-align: center;
    border-radius: 100%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
}

.boxgallery>nav i {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
}

.boxgallery>nav span.next::before {
    font-family: 'FontAwesome';
    left: 25%;
    content: "→";
    font-weight: 500;
    font-size: 25px;
}

.boxgallery>nav span.prev::before {
    font-family: 'FontAwesome';
    left: 25%;
    content: "←";
    font-size: 25px;
}

/* Transitions and individual delays/effects */

/* The "active" class is given to the panel that is coming */

.panel.current {
    z-index: 2;
}

.panel {
    position: relative;
}

.panel:after {
    position: absolute;
    content: '';
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(36, 42, 53, 0.20);
}

.panel.active {
    z-index: 1;
}

.panel.current .bg-img {
    -webkit-transition: -webkit-transform 1.1s ease-in-out;
    transition: transform 1.1s ease-in-out;
}

.panel.current .bg-img:after {
    position: absolute;
    content: '';
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(36, 42, 53, 0.20);
}

.boxgallery[data-effect="effect-1"] .panel.active .bg-tile,
.boxgallery[data-effect="effect-2"] .panel.active .bg-tile {
    -webkit-animation: scaleDown 1.1s ease-in-out;
    animation: scaleDown 1.1s ease-in-out;
}

@-webkit-keyframes scaleDown {
    from {
        -webkit-transform: translate3d(0, 0, 380px);
        transform: translate3d(0, 0, 380px);
    }
    to {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

@keyframes scaleDown {
    from {
        -webkit-transform: translate3d(0, 0, 380px);
        transform: translate3d(0, 0, 380px);
    }
    to {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

/* Variation 2 */

.boxgallery[data-effect="effect-2"] .panel.current .bg-img {
    -webkit-transition: -webkit-transform 0.9s cubic-bezier(0.7, 0, 0.3, 1);
    transition: transform 0.9s cubic-bezier(0.7, 0, 0.3, 1);
}

.boxgallery[data-effect="effect-2"] .panel.current .bg-tile:nth-child(2) .bg-img {
    -webkit-transition-delay: 0.15s;
    transition-delay: 0.15s;
}

.boxgallery[data-effect="effect-2"] .panel.current .bg-tile:nth-child(3) .bg-img {
    -webkit-transition-delay: 0.3s;
    transition-delay: 0.3s;
}

.boxgallery[data-effect="effect-2"] .panel.current .bg-tile:nth-child(4) .bg-img {
    -webkit-transition-delay: 0.45s;
    transition-delay: 0.45s;
}

/* Variation 3 */

.boxgallery[data-effect="effect-3"] .panel::after {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    content: '';
    -webkit-transition: opacity 1.1s ease-in-out;
    transition: opacity 1.1s ease-in-out;
}

.boxgallery[data-effect="effect-3"] .panel.current::after,
.boxgallery[data-effect="effect-3"] .panel.active::after {
    opacity: 0;
}

.boxgallery[data-effect="effect-3"] .panel.current::after {
    -webkit-transition: none;
    transition: none;
}

.boxgallery[data-effect="effect-3"] .panel.current .bg-img {
    -webkit-transition: -webkit-transform 1.1s cubic-bezier(0.7, 0, 0.3, 1);
    transition: transform 1.1s cubic-bezier(0.7, 0, 0.3, 1);
}

.boxgallery[data-effect="effect-3"] .panel.current .bg-tile:nth-child(2) .bg-img {
    -webkit-transition-delay: 0.15s;
    transition-delay: 0.15s;
}

.boxgallery[data-effect="effect-3"] .panel.current .bg-tile:nth-child(3) .bg-img {
    -webkit-transition-delay: 0.3s;
    transition-delay: 0.3s;
}

.boxgallery[data-effect="effect-3"] .panel.current .bg-tile:nth-child(4) .bg-img {
    -webkit-transition-delay: 0.45s;
    transition-delay: 0.45s;
}

/** Media **/

@media (max-width: 1200px) {
    .boxgallery>nav span.prev {
        left: 5px;
        width: 40px;
        height: 60px;
        line-height: 60px;
        border-radius: 3px;
    }
    .boxgallery>nav span.next {
        right: 5px;
        width: 40px;
        height: 60px;
        line-height: 60px;
        border-radius: 3px;
    }
    .boxgallery>nav span.next::before {
        font-size: 20px;
    }
    .boxgallery>nav span.prev::before {
        font-size: 20px;
    }
}

@media (max-width: 992px) {
    .isa-3 {
        margin: 0 0 !important;
    }
}

@media (max-width: 768px) {
    .boxgallery>nav span.prev {
        left: 2px;
        width: 30px;
        height: 50px;
        line-height: 50px;
    }
    .boxgallery>nav span.next {
        right: 2px;
        width: 30px;
        height: 50px;
        line-height: 50px;
    }
    .boxgallery>nav span.next::before {
        font-size: 16px;
    }
    .boxgallery>nav span.prev::before {
        font-size: 16px;
    }
}

@media screen and (max-width: 380px) {
    .boxgallery>nav span {
        width: 50px;
        height: 50px;
    }
}