.slideshow_container:hover .slideshow_button {
    opacity: 0.5 !important;
}

.slideshow_button {
    display: block !important;
    opacity: 0 !important;
    transition: opacity 400ms ease;
    border: 0;
}

.slideshow_container:hover .slideshow_button:hover,
.slideshow_container:hover .slideshow_button:focus,
.slideshow_button:hover,
.slideshow_button:focus {
    opacity: 1 !important;
}

.slideshow_button span {
    pointer-events: none;
}