body {
  margin: 0;
  background: #f5f7fb;
  color: #182337;
  font:
    17px/1.7 system-ui,
    sans-serif;
}
main {
  max-width: 780px;
  margin: 60px auto;
  padding: 36px;
  background: white;
  border-radius: 20px;
}
a {
  color: #3454d1;
}
h1 {
  line-height: 1.2;
}
h2 {
  font-size: 21px;
  margin-top: 32px;
}
.meta {
  color: #617084;
  font-size: 14px;
}
nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
@media (max-width: 640px) {
  main {
    margin: 16px;
    padding: 24px;
  }
}