body {
}

#content {
  width: 1500px;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

#content > * {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

ul {
  padding-left: 1.5em;
}

#album-photos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.thumbnail {
  margin: 1em;
  display: flex;
  align-items: center;
}

#nav {
  width: 150px;
  margin: auto;
  display: flex;
  padding: 0.5em;
}

#nav div {
  width: 50px;
}

.arrow {
  border: solid black;
  border-width: 0 3px 3px 0;
  display: inline-block;
  padding: 3px;
}

.arrow-right {
  transform: rotate(-45deg);
  -webkit-transform: rotate(-45deg);
}

.arrow-left {
  transform: rotate(135deg);
  -webkit-transform: rotate(135deg);
}

.arrow-up {
  transform: rotate(-135deg);
  -webkit-transform: rotate(-135deg);
}