The checkout login form is used to allow a website visitor to create an account, or login to an existing one, during the checkout process.
The account creation process is described here.
The login form should have the action attribute set to /checkout/login and include and include text fields where the name attribute is set to email and password.
<form action="/checkout/login" method="post"> <input type="text" name="email"> <input type="text" name="password"> <button type="submit">login</button> </form>
On successful submission of the form, the user will be redirected to the checkout/address view.