.block__images img {
    width: 100%;
}

.block__images .images__gallery {
    position: relative;
}

    .block__images .images__gallery .button {
        position: absolute;
        top: calc(50% - 1rem);
        width: 3rem;
        height: 3rem;
        padding: 0;
        background-color: #fff;
        z-index: 1;
    }

    .block__images .images__gallery .button--prev {
        left: 1rem;
    }

    .block__images .images__gallery .button--next {
        right: 1rem;
    }

.block__images .images__caption {
    font-size: 1.4rem;
    opacity: .5;
}