The champions went ahead through Alvaro Morata before Ramos doubled the lead, but was then sent off for the 17th time in his career.
Atletico Madrid beat Valladolid to stay four points clear of their city rivals.
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Liverpool have unveiled their new home kit for next season, sticking with the hugely popular retro styling of the current shirt.
The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.