@media (max-width: 400px) {
    .elementor-widget-theme_elementor-posts .swiper .swiper-slide{
        width: 310px;
    }
}

.elementor-widget-theme_elementor-posts .swiper-button-prev,
.elementor-widget-theme_elementor-posts .swiper-button-next{
    visibility: hidden;
    opacity: 0;
    transition: all ease 0.3s;
}

.elementor-widget-theme_elementor-posts:hover .swiper-button-prev,
.elementor-widget-theme_elementor-posts:hover .swiper-button-next{
    visibility: visible;
    opacity: 1;
}