After researching login forms from other websites and planning out how I would like mine to be, I started to design and create a very clean basic login form. This login form will be used to login to the backend of the website so it needs to just be a dedicated page only for a the form and not integrated into the site. The front end login form I will start work on after the backend is created.

This is the design I came up with after a few iterations:

I decided to make a couple more changes as the login button/forgotten password could be laid out a little neater so this is the final design:

To test out the form, I decided to create it as a full html page, which you can see here.