comment/src/components/Editor/Upload.css

.ant-upload-select-picture-card i {
  font-size: 32px;
  color: #999;
}

.ant-upload-select-picture-card .ant-upload-text {
  margin-top: 8px;
  color: #666;
}

.upload-img-preview .ant-modal-close {
  top: -10px;
  right: -15px;
}