The right way to round pandas.DataFrame?

I want round pandas.DataFrame.

Here is what i have tried so far:

import pandas as pd
data = pd.DataFrame([1.4,2.5,3.8,4.4,5.6],[6.2,7.6,8.8,9.1,0])
print(round(data))

But when i run this code, i get the following error:

Traceback (most recent call last):
  File "C:\Users\*****\Documents\*****\******\****.py", line 3, in <module>
    print(round(data))
TypeError: type DataFrame doesn't define __round__ method

What is the right way to round pandas.DataFrame ?