.bulk_rename {
  width: calc(100% - 20px);
}

.bulk_rename_preview {
  width: 80%;
}

.bulk_button {
  width: 100%;
}

.bulk_preview_header {
  margin-top: 5px;
  margin-bottom: 5px;
}

.bulk_input {
  width: 100%;
  margin-right: 15px;
}

.bulk_preview_label {
  margin-right: 15px;
}