.banner {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.banner-track {
  display: flex;
  transition: transform 1s ease-in-out; /* slow smooth */
}

.banner-item {
  min-width: 100%;
}

.banner-item img {
  width: 100%;
  height: 600px;
  padding-top: 100px;
  object-fit: cover;
}

/* Arrows */
.nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.4);
  color: white;
  border: none;
  padding: 12px 16px;
  cursor: pointer;
  font-size: 22px;
  border-radius: 5px;
}

.prev { left: 10px; }
.next { right: 10px; }

.nav:hover {
  background: rgba(0,0,0,0.7);
}

/* Responsive */
@media (max-width: 768px) {
  .banner-item img {
    height: 250px;
  }
}