.carousel-item img {
    display: inline-block;
    max-height: 100%;
    margin: 0 auto;
}

.img80 img {
    max-width: 80%;
}

.img60 img {
    max-width: 60%;
}

.img50 img {
    max-width: 50%;
}

.caption {
    padding-top: 1rem;
}
.card .options {
    z-index: 2;
    position: relative;
}
    .card .options .edit, .card .options .up, .card .options .down {
        position: relative;
        bottom: .2rem;
        display: inline-block;
        line-height: 1;
        cursor: pointer;
        margin: 0 4px;
    }