message: adjust footer layout for smaller devices.
diff: <footer
  class="py-large m-auto px-xx-small md:max-w-4xl md:py-small md:px-xx-small"
  >
  - <div class="flex justify-between flex-wrap pb-micro md:pb-small">
  + <div
  + class="flex gap-x-x-small sm:gap-x-medium md:gap-0 justify-between flex-wrap pb-micro md:pb-small"
  + >
  <Section title="Gitpod">
  <li><FooterLink href="/">Home</FooterLink></li>
  <li><FooterLink href="/pricing">Pricing</FooterLink></li>
  