/* Image Slider CSS */

.container {
  max-width: 640px;
  background-color: transparent;
  margin: 0 auto;
  text-align: center;
  position: relative;
}
.container div {
  background-color: transparent;
  width: 100%;
  display: inline-block;
  display: none;
}
.container img {
  width: 640px;
  height: 480px;
}

button {
  position: absolute;
}

.next {
  right: 5px;
}

.prev {
  left: 5px;
}