Xmee has 30 unique animated HTML templates which are modern and clean designs that are fully responsive. Login, Registration, Forgot Password, and OTP pages are available here. These templates are built on Bootstrap 4+ Framework and RTL supported. The code is excellently formatted and commented on. It is easy to customize.
Demo: https://themeforest.net/item/xmee-login-and-register-form-html-templates/25961819