.gallery {
  list-style: none;
  padding: 5rem;
  margin: 5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(50%, 1fr));
  gap: 3rem;
}
.gallery figure {
  --gallery-height: auto;
    /* reset figure default margin */
  margin: 0;
  height: var(--gallery-height);
}

.gallery img {
  display: block;
  margin: 5%;
  width: 100%;
  object-fit: cover;
  height: var(--gallery-height);
}
.contentblock {
  width: 80%; /* takes 80% of page width */
  margin: 0 auto;
}

content {
  display:flex;
  margin:0 auto;
}
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow-x: hidden;
}
body {
  background-color: black;
  color: white;
  font-family: serif;
}
h1, h2, h3 {
  font-weight: normal;
}
main {
  position: relative;
  z-index: 1;
}