.photos-slider__item.proportional-box {
    padding-top: 65%;
}

.photos-slider .owl-dots{
    position: absolute;
    width: 100%;
    margin-top: -10%;
}

@media ( min-width: 800px ) {
    .photos-slider__item.proportional-box {
        padding-top: 430px;
    }

}