.file-plus {
  padding: 1em 0;
}
.file-plus img {
  transition-duration: 0.2s;
  background: #fff;
}
.file-plus img:hover {
  opacity: 0.8;
}
.file-plus.icon-used img {
  background: transparent;
}
.fileset-file-plus-center .file-plus {
  text-align: center;
}