Why widget EmailInput style doesn't apply - django

Question

I'm trying to style the django forms, I could apply the class to the TextInputs with widget but for the email and password it doesn't apply. Any idea why?
Also, how can I delete the text above password? The password requisites, it isn't help_text
forms.py
class SignupForm(UserCreationForm):
email = forms.EmailField()
class Meta:
model = User
fields = ['email', 'first_name', 'last_name', 'password1', 'password2']
widgets = {
'email': forms.EmailInput(attrs={'class': 'forms-group__input'}),
'first_name': forms.TextInput(attrs={'class': 'forms-group__input'}),
'last_name': forms.TextInput(attrs={'class': 'forms-group__input'}),
'password1': forms.PasswordInput(attrs={'class': 'forms-group__input'}),
'password2': forms.PasswordInput(attrs={'class': 'forms-group__input'}),
}
forms.html
<form class="forms-group__form" method="POST" enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
{{ field.errors }} <br>
<div class="forms-group__input-field">
<label class="forms-group__label">{{ field.label_tag }}</label><br>
{{ field }}<br>
{% if field.help_text %}
<p class="help">{{ field.help_text|safe }}</p>
{% endif %}
</div>
{% endfor %}
<div class="forms-group__button-div"><input class="button submit-button forms-group__button" type="submit" value="Update Profile"></div>
</form>

Answer 1

Fields that are declared in the form class are not automatically generated by the ModelForm, hence declaring a widget for them in the widgets attribute of the Meta does not work. You can either forego declaring it in the class and let it be generated automatically:
class SignupForm(UserCreationForm):
email = forms.EmailField()
...
Or you can specify the widget for the field in the field itself:
class SignupForm(UserCreationForm):
email = forms.EmailField(widget=forms.EmailInput(attrs={'class': 'forms-group__input'}))
...