gallery/app/assets/stylesheets/theater.css

/* Reset and basic styles */

body {
    overflow-x: hidden;
}

*,
*:before,
*:after {
    box-sizing: border-box;
}

.gallery-mode-on {
    /*overflow-y: hidden;*/
}
/* Gallery */

#gallery-theater-stage {
    display: none;
}

#gallery-theater-stage > .gallery {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: #000;
    z-index: 2000;
}

.gallery-loader {
    padding: 10px;
    position: absolute;
    display: none;
    left: 50%;
    top: 10px;
    -webkit-transform: translate(-50%, 50%);
    transform: translate(-50%, 50%);
    border-radius: 2px;
    z-index: 2000;
    background-color: rgba(0, 0, 0, .6);
    transition: .3s all;
}

.spinner {
    margin: 0 auto;
    width: 50px;
    height: 20px;
    text-align: center;
    font-size: 10px;
}

.spinner > div {
    background-color: #e8e8e8;
    height: 100%;
    width: 4px;
    display: inline-block;
    -webkit-animation: stretchdelay 1.2s infinite ease-in-out;
    animation: stretchdelay 1.2s infinite ease-in-out;
}

.spinner .rect2 {
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
}

.spinner .rect3 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
}

.spinner .rect4 {
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
}

.spinner .rect5 {
    -webkit-animation-delay: -0.8s;
    animation-delay: -0.8s;
}

@-webkit-keyframes stretchdelay {
    0%, 40%, 100% {
        -webkit-transform: scaleY(0.4)
    }
    20% {
        -webkit-transform: scaleY(1.0)
    }
}

@keyframes stretchdelay {
    0%, 40%, 100% {
        transform: scaleY(0.4);
        -webkit-transform: scaleY(0.4);
    }
    20% {
        transform: scaleY(1.0);
        -webkit-transform: scaleY(1.0);
    }
}

.gallery-actions {
    position: absolute;
    right: 1rem;
    top: 1rem;
    cursor: pointer;
    background: rgba(255, 255, 255, .7);
    border-radius: 2px;
    z-index: 2000;
}

.gallery-actions-btn {
    padding: 8px 12px 8px 10px;
    display: inline-block;
}

.touch .gallery-actions-btn {
    padding: 12px 15px 12px 15px;
}

.gallery-theme-switch {
    border-right: 1px solid rgba(255, 255, 255, .2);
}

.gallery-close {
    color: #000;
}

.gallery-theme-switch:hover,
.gallery-close:hover {
    color: #fff;
}

.touch .image-container {
    height: 100%;
    padding-bottom: 150px;
    z-index: 800;
}

.gallery-image {
    position: fixed;
    left: 50%;
    top: 50%;
    width: 60%;
    height: auto;
    cursor: pointer;
}

.no-touch .gallery-image {
    -webkit-transition: .3s all;
    transition: .3s all;
}

.gal-prev {
    display: none;
    left: 0;
    -webkit-transform: translate(-95%, -50%);
    transform: translate(-95%, -50%);
}

.gal-prev:hover {
    -webkit-transform: translate(-94%, -50%);
    transform: translate(-94%, -50%);
}

.gal-next {
    display: none;
    left: auto;
    right: 0;
    -webkit-transform: translate(95%, -50%);
    transform: translate(95%, -50%);
}

.gal-next:hover {
    -webkit-transform: translate(94%, -50%);
    transform: translate(94%, -50%);
}

.gal-inactive {
    -webkit-transition: .3s all;
    transition: .3s all;
    opacity: .3;
}

.gal-inactive:hover {
    opacity: 1;
}

.gal-active {
    display: none;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}
/* Thumbnails */
.gallery-thumb-toggle {
    position: absolute;
    bottom: -1000px;
}
.gallery-thumb-wrap {
    overflow-y: hidden;
    overflow-x: hidden;
    list-style: none;
    margin: 0 auto;
    padding: 10px 0;
    text-align: center;
    white-space: nowrap;
    position: absolute;
    left: 50%;
    bottom: 0;
    -webkit-transition: .3s all;
    transition: .3s all;
}

.gallery-item {
    margin-right: 1em;
    display: inline-block;
}

.gallery-item.active {
    border-radius: 2px;
    border-radius: 0.125rem;
    border: 5px solid #fff;
}

.gallery-thumb {
    width: 50px;
    height: 50px;
    opacity: .5;
    -webkit-transition: .3s opacity;
    transition: .3s opacity;
}

.gallery-thumb:hover {
    opacity: 1;
}

.gallery-thumb-container {
    height: 80px;
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background: #1b1b1b;
}

.gallery-thumb-navs {
    display: none;
}

.gallery-thumb-navs.show {
    display: block;
}

.gallery-thumb-nav {
    position: absolute;
    cursor: pointer;
    font-size: 1.4rem;
    color: rgba(255, 255, 255, .7);
    background: #222;
    height: 80px;
    line-height: 80px;
    width: 50px;
    text-align: center;
    z-index: 900;
}

.gallery-thumb-nav:hover {
    color: #fff;
}

.gallery-thumb-prev {
    left: 0;
}

.gallery-thumb-next {
    right: 0;
}

.active .gallery-thumb {
    opacity: 1;
}
/* White theme */

.theme-white #gallery-theater-stage > .gallery {
    background-color: #fffdf7;
}

.theme-white .gallery-actions {
    background-color: #eee;
    border: 1px solid #ddd;
}

.theme-white .gallery-theme-switch {
    border-right: 1px solid #ddd;
}

.theme-white .gallery-thumb-toggle,
.theme-white .gallery-thumb-toggle:before,
.theme-white .gallery-thumb-toggle:after {
    color: #777;
    border-color: #aaa;
}

.theme-white .gallery-thumb-container {
    background-color: #e2e2e2;
    border-top: 1px solid #c7c7c7;
}

.theme-white .gallery-actions-btn {
    color: #777;
}

.theme-white .gallery-actions-btn:hover {
    color: #ff4444;
}

.theme-white .gallery-item.active {
    border-color: #ff4444;
}

.theme-white .gallery-thumb-nav {
    color: #777;
    background-color: #eee;
}

.theme-white .gallery-thumb-prev {
    border-right: 1px solid #c7c7c7;
}
.theme-white .gallery-thumb-next {
    border-left: 1px solid #c7c7c7;
}

.theme-white .gallery-thumb-nav:hover {
    color: #ff4444;
}

.theme-white .gallery-loader {
    background-color: #777;
}

.theme-white .spinner > div {
    color: #ff4444;
}

@media screen and (max-width: 768px) {

    .gal-prev {
        -webkit-transform: translate(-101%, -50%);
        transform: translate(-101%, -50%);
    }

    .gal-next {
        -webkit-transform: translate(101%, -50%);
        transform: translate(101%, -50%);
    }

    .gallery-thumb-toggle {
        bottom: 50px;
        left: 0;
        color: #fff;
        width: 100%;
        text-align: center;
        -webkit-transition: .1s all;
        transition: .1s all;
    }

    .gallery-thumb-toggle.up {
        bottom: 96px;
    }

    .gallery-thumb-toggle:before {
        content: "";
        position: absolute;
        top: 50%;
        left: 10%;
        margin: auto;
        width: 38%;
        border-top: 1px solid rgba(255, 255, 255, .2);
        height: 1px;
    }

    .gallery-thumb-toggle:after {
        content: "";
        position: absolute;
        top: 50%;
        right: 10%;
        margin: auto;
        width: 38%;
        border-top: 1px solid rgba(255, 255, 255, .2);
        height: 1px;
    }

    .gallery-thumb-container {
        bottom: -1000px;
        -webkit-transition: .1s all;
        transition: .1s all;
    }
    .gallery-thumb-container.show {
        bottom: 0;
    }
}