Here is my forms.py file where addmanagerform function is defined

from django import forms from bus_booking.models import Manager, Staff, Bus, Terminal, Schedule     class AddManagerForm(forms.Form):     email=forms.EmailField(label="Email",max_length=50,widget=forms.EmailInput(attrs={'placeholder':'Enter your email','class':'form-control'}))     password=forms.CharField(label="Password",min_length=8,widget=forms.PasswordInput(attrs={'placeholder':'Enter your password',"class":"form-control"}))     name=forms.CharField(label="Name",min_length=4,max_length=20,widget=forms.TextInput(attrs={'placeholder':'Enter your name',"class":"form-control"}))     username=forms.CharField(label="Username",min_length=4,max_length=10,widget=forms.TextInput(attrs={'placeholder':'Enter a unique username',"class":"form-control"}))     gender_choice=(         ("Male","Male"),         ("Female","Female")     )      cnic=forms.CharField(label="Cnic",max_length=13,min_length=13,widget=forms.TextInput(attrs={'placeholder':'xxxxxxxxxxxxx',"class":"form-control"}))     gender=forms.ChoiceField(label="Gender",choices=gender_choice,widget=forms.Select(attrs={'placeholder':'Select',"class":"form-control"}))     address=forms.CharField(label="Address",max_length=200,widget=forms.TextInput(attrs={'placeholder':'Enter your address',"class":"form-control"}))     salary=forms.IntegerField(label="Salary",widget=forms.NumberInput(attrs={'placeholder':'b/w 5000 - 1000000',"class":"form-control"}))     date_of_birth=forms.DateField(label="DOB",widget=DateInput(attrs={'placeholder':'Enter your date of birth',"class":"form-control"}))     contact_number=forms.CharField(label="Contact",max_length=10,min_length=10,widget=forms.TextInput(attrs={'placeholder':'+92xxxxxxxxxx (enter 10 digits)',"class":"form-control"})) 

Here is form.html:

 <form role="form" action="{{ action_path }}" method="post" enctype="multipart/form-data">                   {% csrf_token %}                 <div class="card-body">                      {% for field in form %}                   <div class="form-group">                       {{ field.errors }}                       {{ field.label_tag }}                       {{ field }}                   </div>                     {% endfor %}                     <div class="form-group">                       {% if messages %}                         {% for message in messages %}                         {% if message.tags == 'error' %}                         <div class="alert alert-danger" style="margin-top:10px">{{ message }}</div>                         {% endif %}                         {% if message.tags == 'success' %}                         <div class="alert alert-success" style="margin-top:10px">{{ message }}</div>                         {% endif %}                         {% endfor %}                       {% endif %}                     </div>                  </div>                 <!-- /.card-body -->                  <div class="card-footer">                   <button type="submit" class="btn btn-primary btn-block">{{ button_text }}</button>                 </div>               </form>

But my styling on forms is not working, it shows me form like:

Where i am doing mistake that styling is not working, is there any issue of importing some thing?