message: small tweak to responsive layout for cardstack landing page
diff: --horizontal-card-gap: var(--boxel-sp-lg);
  width: 100%;
  - max-width: calc(var(--card-width) * 2 + var(--horizontal-card-gap));
  + max-width: calc(var(--card-width) * 2 + var(--horizontal-card-gap) + var(--boxel-sp-sm) * 2);
  margin: auto;
  - padding-bottom: var(--boxel-sp-lg);
  + padding: 0 var(--boxel-sp-sm) var(--boxel-sp-lg) var(--boxel-sp-sm);
  }
  .cardstack-container > * {
  .cardstack-org-grid {
  display: grid;
  justify-items: center;
  - grid-template-columns: repeat(auto-fill, var(--card-width));
  + grid-template-columns: repeat(auto-fill, minmax(var(--card-width), 1fr));
  grid-template-rows: auto auto;
  gap: var(--boxel-sp-xl) var(--horizontal-card-gap);
  }
  +.cardstack-org-grid > * {
  + justify-self: start;
  +}
  +
  +.cardstack-org-grid > *:nth-child(2n) {
  + justify-self: end;
  +}
  +
  .cardstack-org-grid .org-card {
  height: 100%;
  }
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