Типовые элементы интерфейса — CSS — стопка слайдов и плавная смена

.banner-slider {
  position: relative;
  min-height: 220px;
  border-radius: 12px;
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}

.slide[data-active='true'] {
  position: relative;
  opacity: 1;
  pointer-events: auto;
}