Default Login Link

are you trying to add a login form to that specific section of the page? If so you can use the technique noted in this stackexchange.

https://wordpress.stackexchange.com/questions/152997/how-to-display-login-form-anywhere-when-user-isnt-logged-in-without-redirecti

If you are savvy with building plugins you can even create a simple shortcode style plugin to add a shortcode to the area of your site you want the login form to appear making it easier to implement on the different pages.

Hope this helps