* {
  box-sizing: border-box;
}

body {
  background-color: white;
  color: #333333;
  margin: 0;
  font: 1.2em / 1.6 sans-serif;
}

img {
  max-width: 100%;
  display: block;
  border: 1px solid black;
}

.logo {
  font-size: 200%;
  padding: 50px 20px;
  margin: 0 auto;
  max-width: 980px;
}

.grid {
  margin: 0 auto;
  max-width: 980px;
  /* Solution: Display <article> and <aside> as two flexible
  columns, with <article> three times the width of <aside>,
  and a 20px gap */
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 20px;
}

nav {
  background-color: black;
  padding: 0.5em;
  /* Solution: Make navigation bar scroll with content normally but
  then stick to top of viewport */
  top: 0;
  position: sticky;
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  /* Solution: Display the navigation items in a row with equal space
  in between and less space at the ends  */
  display: flex;
  justify-content: space-around;
}

nav a {
  color: white;
  text-decoration: none;
  padding: 0.5em 1em;
}

.photos {
  list-style: none;
  margin: 0;
  padding: 0;
  /* Solution: Display photos in two-column grid with equal columns
  and a 5px gap */
  display: grid;
  gap: 5px;
  grid-template-columns: 1fr 1fr;
}

.feature {
  width: 200px;
  /* Solution: Wrap text around the "feature" image to the right and bottom,
  with suitable space between image and text */
  float: left;
  margin: 8px 30px 20px 0;
}

/* This forces all images inside the .photos grid to be perfect squares */
.photos img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}