Template:BubbleBox/styles.css

.bubbleboxbg {
  background-image: url("//cdn.wikimg.net/en/splatoonwiki/images/2/26/Amiibo_main_bg.png");
}

@media (max-width: 600px) {
  .tagInfobox {
    width: auto !important;
    float: none !important;
  }
}