How to restrict my dataframe for all the columns values between 0 to 100 in python

Question

Can anyone help me out to restrict my dataframe for all the columns values between 0 to 100 in python:

if (df.loc[:,:] > 0) & (df.loc[:,:] < 100):
    print(df)
else:
    print('Data out of range')

Also, please find the dataframe df below:

Position    Marks
5.7680  56.4000
5.7680  56.4000
5.7680  56.4000
5.7680  56.4000
7.2680  56.4000
5.7680  56.4000
5.7680  56.4000
5.7680  
5.7680  56.4000
5.7680  56.4000
56.400
5.7680  56.4000
5.9680  56.4000
5.7680  56.4000
2.7680  56.4000
5.7680  56.4000
5.7680  
5.7680  56.4000
5.7680  56.4000
5.7680  56.4000

Answer 1

df = pd.DataFrame({'birth_year': [1979, 50, 1977],
                'Price': [2000, 300, 375] })
df[(0<df)&(df<100)]

should work. Df is just a example

Based on the new information provided, this is more correct

df = df[(0<df)&(df<100)]
sum_outside_0_100 = df.isna().sum().sum()
if sum_outside_0_100>0:
   print("DATA OUT OF RANGE")
else: 
   print(df)

Answer 2

After clarifying question I've ended with this one line of code:

print("DATA OUT OF RANGE" if  df[(0<df)&(df<100)].isnull().values.any() else df)

Now above solution should meet requirements.