main {
    background-color: lightgray;
}

section {
    justify-content: center;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

h2#home {
    margin: 6px 18px 0 18px;
}

article {
    margin: 12px;
}
section > article:first-of-type {
  margin-top: 0;
}