* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
/*  max-width: 900px;*/
  margin: 0 auto;
  background-color: #ebebeb;
}

#image-gallery {
/*  width: 35rem;*/
  margin: 4rem auto;
}

#main-image {
  width: 100%;
  background-color: #fff;
  padding: 1rem;
  box-shadow: rgba(0, 0, 0, 0.08) 0px 4px 12px;
}

#thumbnail-container {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.thumbnail {
  width: auto;
  height: 100px;
  margin: 10px;
  cursor: pointer;
}

.thumbnail:hover {
  opacity: 0.7;
}