Login Page embedded in on our Website

I would love the capability to embed the Login Page to my website so clients can login directly from m website into their portal.
Currently, only a link is offered but this is a pretty dated concept. The link is easily lost in emails or texts, as many are not saving it as a favorite. I've added the link on my website, as a workaround, but the x in the corner is distracting. Clients are clicking the x and being directed to the Designfiles marketing page and become confused. The marking page for Desginfiles is targeted at designers, not our clients, so it's very distracting.