ul.RSflexbox {
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  margin: 0.5vmin;
  max-height: 100%;
  overflow: auto;
}

li.RSflexbox {
  margin: 0.5vmin;
  flex-grow: 1;
  list-style-type: none;
  cursor: pointer;
}

li.RSselected {
  border-radius: 5px;
  outline: 5px solid #0d6efd;
  outline-style: dashed;
}

li.RSflexbox:last-child {
  flex-grow: 10;
}

img.RSflexbox {
  object-fit: cover;
  vertical-align: bottom;
  border-radius: 1vmin;
}