/* On phones, the shared section-shell rule must not narrow full-width sections 01 and 03. */
@media(max-width:800px){
  main > section.intro.section-shell,
  main > section.work.section-shell,
  main > section.proof.section-shell {
    box-sizing:border-box !important;
    width:100% !important;
    max-width:none !important;
    margin-inline:0 !important;
  }
  main > section.work.section-shell {
    background-color:#0a0a0a !important;
  }
}