Wolves stay three points clear at the top after a routine 3-0 win over struggling Reading.
It left Cardiff holding a seven-point advantage over Villa, whose automatic promotion hopes suffered a major blow with a surprise 3-1 defeat at home to QPR.
The Bluebirds have a tough week ahead with visits to Brentford and Derby County to negotiate, but they need just three points between the two games to ensure they head into the global break with second place still in their grip.
Hull City eased their relegation fears as they hit back from 3-1 down to beat Norwich City 4-3 - Abel Hernandez netting two penalties before Harry Wilson's victor.
But two goals in five second-half minutes from James Chester and Lewis Grabban were added to by Birkir Bjarnason's late fourth.
Sol Bamba, Callum Paterson and Kenneth Zahore scored for Neil Warnock's side after Neal Maupay had opened the scoring for Brentford.
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"We've still got 10 games to go and all we've done is give ourselves a chance", he said.
Benik Afobe could be in line to get a start for Wolves, having been trying to make an impact from the substitutes bench since his arrival from AFC Bournemouth. "They know that all the pressure is on the big clubs because of the expectation on their players". Enda Stevens opened the scoring in the first half before David Brooks' goal after the break helped lift them to seventh.
"But, look, they beat us fairly and squarely and things like that you have to take on the chin". "In both penalty areas they were better than us", said the Burton manager, Nigel Clough.
Hull are nine points above the bottom three after a 3-0 win at Ipswich thanks to goals from Markus Henriksen, Harry Wilson and Jarrod Bowen.