support bootstrap 5

[Paul75]

Describe the bug
which template:

• MaterialDesignFrameworkModule — Material Design
• Bootstrap3FrameworkModule — Bootstrap 3
• Bootstrap4FrameworkModule — Bootstrap 4
• NoFrameworkModule — plain HTML
• Other (please specify below)

Support to Bootsstrap 5

When add Bootstrap 4 and add form it change the content of page ....

Before display form :

After load form :

Thanks