body {
    background-color: #fff;
    color: #333;
    margin: 0;
    font: 1.2em / 1.2 Arial, Helvetica, sans-serif;
  }

img {
    max-width: 100%;
    display: block;
}
  
.logo {
  font-size: 200%;
  padding: 50px 20px;
  margin: 0 auto;
  max-width: 980px;
}
  
.grid {
  margin: 0 auto;
  padding: 0 20px;
  max-width: 980px;
  display: grid;
}
  
nav {
  background-color: #000;
  padding: .5em;
  margin: auto;
  position: sticky;
  top: 0;
}
  
nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: center;
  display: flex;
  justify-content: space-between;
}
  
nav a {
  color: #fff;
  text-decoration: none;
  padding: .5em 1em;
}
  
.photos {
  list-style: none;
  margin: 0;
  padding: 0;
  height: 30%;
  width: 30%;
  grid-gap: 1px;
  display: grid;
  grid-template-columns: 110px 110px;
}

.feature {
  width: 200px;
  float: left;
  margin: 5px;
}

article {
  grid-column-start: 1;
  grid-column-end: 3;
}

aside {
  grid-column: 3;
}


@media screen and (max-width: 500px) {
  nav, nav a, nav ul {
    float: none;
    display: block;
  }
}