jellyfin-web/src/components/slideshow/style.scss

.slideshowDialog {
    /* Themes may use non-black backgrounds for dialogs, so override that here */
    background: #000;
}

.slideshowSwiperContainer,
.swiper-wrapper,
.swiper-slide {
    background: #000;
}

.slideshowImage,
.slideshowSwiperContainer {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    background-position: center center;
    background-size: contain;
    background-repeat: no-repeat;
    margin: 0 !important;
    color: #fff;
    line-height: normal;
}

.slideshowImage-cover {
    background-size: cover;
}

.slideshowImageText {
    position: fixed;
    bottom: 0.25em;
    right: 0.5em;
    color: #fff;
    z-index: 1002;
    font-weight: normal;

    /* Add an outline */
    text-shadow: 3px 3px 0 #000, -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000, 1px 1px 0 #000;
}

.slideshowButtonIcon {
    color: #fff;
    opacity: 0.7;
}

.btnSlideshowPrevious {
    left: 0.5vh;
    top: 45vh;
    z-index: 1002;
    position: absolute;
}

.btnSlideshowNext {
    right: 0.5vh;
    top: 45vh;
    z-index: 1002;
    position: absolute;
}

.topActionButtons {
    right: 0.5vh;
    top: 0.5vh;
    z-index: 1002;
    position: absolute;
}

.slideshowBottomBar {
    position: fixed;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 0.5%;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

.slideshowTopBar {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 0.5%;
    display: flex;
    flex-direction: row;
    align-items: center;
    text-align: right;
    justify-content: flex-end;
}

.slideshowExtraButtons {
    margin-left: auto;
    text-align: right;
}

.slideText {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 10vh;
    text-align: center;
}

.slideTextInner {
    margin: 0 auto;
    max-width: 60%;
    background: rgba(0, 0, 0, 0.8);
    display: inline-block;
    padding: 0.5em 1em;
    border-radius: 0.25em;
}

.slideTitle {
    margin: 0 0 0.25em;
}

.slideSubtitle {
    color: #ccc;
}

.swiper-zoom-fakeimg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-position: 50% 50%;
    background-repeat: no-repeat;
    background-size: contain;
    z-index: 1;
    pointer-events: none;
}

.swiper-zoom-fakeimg-hidden {
    display: none;
}