.photo-gallery {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  width: 80%;
  margin: auto;
}

.photo-gallery img {
  max-width: 640px;
  width: 100%;
  height: auto;
}

 .gallery-heading {
  text-align: center;
  color: coral;
  font-weight: bold;
  font-size: 36px;
  font-family: monospace;
}