* {
  margin: 0;
  padding: 0;
  font-family: Georgia, Times, 'Times New Roman', serif;
}

header {
  text-align: center;
  margin: 1rem 0 2rem 0;
}

header h1 {
  margin-bottom: 1rem;
}

nav {
  margin: 0 auto;
  width: min(90%, 75rem);
  border-top: 1px solid black;
  border-bottom: 1px solid black;
  /* margin: 1rem 0; */
}

nav ul {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin: 0 1rem;
}

p {
  line-height: 1.5em;
}

.book-description {
  margin: 1rem 0;
}

.book-description h3 {
  margin-bottom: 1rem;
}

.book-image {
  margin-bottom: 1rem;
}

.book-image img {
  box-shadow: 5px 10px 10px #888888;
  width: 100%;
}

.columns {
  margin: 0 auto;
  width: min(90%, 75rem);
  display: grid;
  grid-auto-flow: row;
  justify-content: center;
}

.link {
  display: flex;
  justify-content: center;
  padding: 1rem;
  margin: 1rem 1rem 0 1rem;
  border:  1px solid black;
  width: 10rem;
}

.link a {
  text-decoration: none;
  transition: all 0.3s ease 0s;
}

.link a:hover {
  filter: drop-shadow(0 0 0.75rem blue);
}

.link a:link {
  color: unset;
}

.link a:visited {
  color: unset;
}

#links {
  margin: 0 auto;
  width: min(90%, 75rem);
  display: flex;
  align-items: center;
  flex-direction: column;
  border-top: 1px solid black;
  margin-bottom: 1rem;
}

.nav-links {
  list-style: none;
}

.nav-links li {
  display: inline-block;
  padding: 0.5rem 1rem;
}

.nav-links li a {
  text-decoration: none;
  transition: all 0.3s ease 0s;
}

.nav-links li a:hover {
  filter: drop-shadow(0 0 0.75rem blue);
}

.nav-links li a:link {
  color: unset;
}

.nav-links li a:visited {
  color: unset;
}

@media screen and (min-width: 55em) {
  .book-image {
    margin-right: 1rem;
    width: 100%;
  }
  .book-description {
    margin: 0 2rem;
  }
  .columns {
    grid-auto-flow: column;
  }
  #links {
    flex-direction: row;
    justify-content: center;
  }
}