.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  z-index: 9999;
}

.overlay img {
  max-width: 90%;
  max-height: 80%;
  border-radius: 10px;
  box-shadow: 0 0 20px #000;
}

.close-btn {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 30px;
  color: white;
  background: none;
  border: none;
  cursor: pointer;
}

.controls {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
  transform: translateY(-50%);
}

.nav-btn {
  font-size: 40px;
  color: white;
  background: none;
  border: none;
  cursor: pointer;
}