personal-site/project/forms.py

from django import forms


class ContactForm(forms.Form):
    name = forms.CharField(label="Nombre",
                           required=True,
                           widget=forms.TextInput(
                               attrs={'placeholder': 'Nombre'}
                           ),
                           min_length=3,
                           max_length=100)
    email = forms.EmailField(label="Email",
                             required=True,
                             widget=forms.EmailInput(
                                 attrs={'placeholder': 'user@page.domain'}
                             ),
                             min_length=3,
                             max_length=100)
    content = forms.CharField(label="Mensaje",
                              required=True,
                              widget=forms.Textarea(
                                  attrs={'placeholder': 'Mensaje'}
                              ),
                              min_length=10,
                              max_length=1000)