.esm-caption-host {
    position: relative;
}

.esm-slide-caption {
    position: absolute;
    left: 22px;
    bottom: 18px;
    z-index: 20;
    max-width: calc(100% - 44px);
    padding: 7px 11px;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.58);
    color: #fff;
    font-size: 14px;
    line-height: 1.3;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
}

.esm-slide-caption.is-visible {
    opacity: 1;
}

@media (max-width: 767px) {
    .esm-slide-caption {
        left: 12px;
        bottom: 12px;
        max-width: calc(100% - 24px);
        padding: 6px 9px;
        font-size: 12px;
    }
}