body {
  background-color: white;
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

header {
  border-bottom: 2px solid black;
}

section#about {
  width: 100%;
  max-width: 760px;
  line-height: 1.4em;
  padding: 0 .5em;
}

nav .nav-item {
  margin: 0 .5em;
}