.phtz1 { margin: 0px; padding: 20px 0px 40px; list-style-type: none; text-align: center; font-size: 0.9rem; flex-flow: wrap; justify-content: flex-start; }
.phtz1 li { margin: 20px auto 0px; padding: 0px; flex-basis: 30%; }
.phtz1 li.nagai { flex-basis: 64%; max-width: 100%; }
.phtz1 img { width: 100%; }
.phtz2 { margin: 0px; padding: 0px; list-style-type: none; text-align: center; display: flex; flex-flow: wrap; justify-content: flex-start; }
.phtz2 li { margin: 20px 20px 0px 0px; padding: 0px; }
@media print, screen and (min-width: 400px) {
  .phtz1 { display: flex; }
  .phtz1 li { margin: 20px 3% 0px 0px; }
}