.table-operation-button {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* tree border */
.tree-border {
  width: 100%;
  margin-top: 5px;
  background: var(--el-bg-color, #ffffff) none;
  border: 1px solid var(--el-border-color-light, #e5e6e7);
  border-radius: 4px;
}
