cirrus-ui/src/base/media.scss

/* MEDIA CSS */
/* Handles images, videos, figures, etc */

video.video-fullscreen {
  position: absolute;
  height: 100vh;
  object-fit: cover;
  width: 100%;
  z-index: -1;
}

.hero.fullscreen video {
    height: 100%;
    object-fit: fill;
    position: absolute;
    width: 100%;
    z-index: -1;
}

/* Add to parent container to make media child fill container */
.media-stretch {
    display: block;
    padding: 0;
    overflow: hidden;
    width: 100%;
    position: relative;

    /* Add pseudoclass to allow media to have height (default height is 0) */
    &::before {
        content: "";
        display: block;
        padding-bottom: 56.25%; /* 9 / 16  for 16:9 ratio */
    }

    /* Force media embed to fill parent container */
    iframe,
    embed,
    object {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        width: 100%; /* Make sure media does exceed or go under boundary limit */
        height: 100%;
    }

    /* Alternate media ratios */
    &.rat-4-3::before {
        padding-bottom: 75%;
    }
    
    &.rat-1-1::before {
        padding-bottom: 100%;
    }

    /* For HTML5 video objects */
    video {
        height: auto;
        max-width: 100%;
        width: 100%;
    }
}
/* FIGURES */
/* For flexible media display */
.fig {
    margin: 0 0 0.5rem 0; /* Small margin at the bottom */

    .fig-caption {
        margin-top: 1rem;
    }
}

/* IMAGES */
.img-stretch {
    max-width: 100%;
    height: auto;
    display: block;
}

.img-cover {
    object-fit: cover;
}

.img-contain {
    object-fit: contain;
}