Vast HTML

This is a full featured plugin to help you edit your login just the way you want it. Lets you use or block the original wordpress 
css (the first plugin to do this). Comes with one pre made style you can use or deactivate. 
Very easy to create your own style using the style tags givin in the plugin. 
Please visit http://vasthtml.com/js/login-xchange-plugin/ for usage instructions.

Login XChange

This plugin will let you change the css of your login and register pages.

David Angulo

Display a login form with captcha on any page, post, or custom post type.
Just use the shortcode <code>[separate_login_form]</code> to display a login form.
Captcha powered by <a href="https://www.hcaptcha.com/" rel="nofollow ugc">hCaptcha</a>.
Please rate and review the plugin if you find it useful.
Find my other works here: <a href="https://www.davidangulo.xyz/portfolio/" rel="nofollow ugc">https://www.davidangulo.xyz/portfolio/</a>

Separate Login Form

It uses a shortcode to show a login form on any page/post on your site.

Works perfectly

Display a login form with captcha on any page, post, or custom post type.

Login XChange vs Separate Login Form