Customize Progressbar in React Uploader component

import { UploaderComponent } from '@syncfusion/ej2-react-inputs';
import * as React from 'react';
import * as ReactDOM from "react-dom";

export default class App extends React.Component<{}, {}> {
  public uploadObj: UploaderComponent;
  public path: object = {
      removeUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Remove',
      saveUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Save'
  }
  private dropAreaRef: HTMLElement;
  public onCreated(): void {
    this.uploadObj.dropArea = this.dropAreaRef;
    this.uploadObj.dataBind();
  }
    public render(): JSX.Element {
        return (
        <div className = 'control-pane' ref={dropAreaEle => this.dropAreaRef = dropAreaEle!}>
            <div className='control-section row uploadpreview'>
            <div className='col-lg-9'>
            <div className='upload_wrapper custom_progress' id="container">
                {/* Render Uploader */}
                <UploaderComponent id='fileUpload' type='file' ref = {upload => {this.uploadObj = upload !}}
                asyncSettings = {this.path} created={this.onCreated = this.onCreated.bind(this)}
                />
            </div>
            </div>
            </div>
        </div>
        )
    }
}

ReactDOM.render(<App />, document.getElementById('fileupload'));

#container {
margin: 0 auto;
width: 400px;
}
  
#loader {
color: #008cff;
font-family: 'Helvetica Neue','calibiri';
font-size: 14px;
height: 40px;
left: 45%;
position: absolute;
top: 45%;
width: 30%;
}

.custom_progress .e-upload .e-upload-files .e-upload-file-list .e-file-container .e-progress-inner-wrap .e-upload-progress-bar.e-upload-progress {
  background: yellow;
  height: 4px;
}

 .custom_progress .e-upload .e-upload-files .e-upload-file-list .e-file-container .e-progress-inner-wrap {
  height: 4px;
  background-color: lightblue;
}