Allows to set different parameter for different responsive breakpoints (screen sizes).
{// when window width is >= 0px"0": {"slidesPerView":1,"spaceBetween":20 },// when window width is >= 320px"320": {"slidesPerView":1,"spaceBetween":20 },// when window width is >= 768px"768": {"slidesPerView":2,"spaceBetween":20 },// when window width is >= 992px"992": {"slidesPerView":3,"spaceBetween":20 },// when window width is >= 1200px"1200": {"slidesPerView":4,"spaceBetween":20 }}