div#panel_list_page div.list_box a
{
  flex: 1 1 100%;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  max-width: 200px;
}

div#panel_list_page div.list_box a div.img_box
{
  flex: 0 1 100%;
  width: 100%;
  padding-top: 75%; /* 4:3 */
  margin: 0 0 8px 0;
}

div#panel_list_page div.list_box a div.img_caption
{
  width: 100%;
  justify-content: center;
  text-align: center;
  font-size: .9em;
}