app/static/index.html

<center>
	
<h1 class='display-1'>Automated Image</h1>
<h1 class='display-1'>Captioning</h1>

<br>
<br>

<form action="{{url_for('after')}}" method='POST' enctype='multipart/form-data'>
    <input type="file" name='file1'>
<input type="submit" name="btn" value='predict caption' class='btn btn-warning'> 
</form>
</center>