html {
  background: #f9f8f4;
  color: #111;
  font: 14px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  letter-spacing: 0.01em;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

main {
  max-width: 52ch;
  text-align: center;
}

img {
  display: block;
  margin: 0 auto 28px;
  width: 56px;
  height: auto;
}

img:hover {
  content: url("assets/robot-happy.png");
}

h1 {
  margin: 0 0 20px;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.14em;
}

p {
  margin: 0 0 4px;
  color: #555;
}

p:nth-of-type(3) {
  margin-top: 16px;
}