Per the documentation for FormBuilder and our experience, the FormBuilder will not honor the styling specified in FormSection partial Views unless the .CSS file(s) are copied into Content/FormSection directory of the MVC application.
For example, if the custom FormSection view HTML is
<div class="row section">
<div class="col-lg-6">
@Html.Kentico().FormZone()
</div>
<div class="col-lg-6">
@Html.Kentico().FormZone()
</div>
</div>
then we must copy the bootstrap.css into the Content/FormSections directory of the MVC app.
However, this causes a conflict when the MVC application is deployed.
Is there another way to have the FormBuilder properly render FormSection views?