I just came across the accept attribute of <input type=file> and i really like it as i see that i don't need to write seperate validation for input file type if i use this attribute. its very simple like

<input type=file accept=image/*> will accept only image files..

<input type=file accept=audio/*> will accept only audio files..

<input type=file accept=video/*> will accept only video files..

However i see that if i some how select a different file then i see an error message

Please enter a value with a valid mimetype.

i just want to know if it i can somehow change this error message and print it so something of my choice.. also is it possible to add some css to this error message ??