personal-site/django/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)