Riyad Mahrez is on the scoresheet as Manchester City overcomes a resilient Albion at the Etihad Stadium
The home side struggled for a breakthrough in a frustrating first half, before taking the lead in the 53rd minute through Riyad Mahrez.
In his 300th match for the club, Kevin De Bruyne made a surging run from the halfway line. Before his pass was deflected to Mahrez, whose shot also took a deflection into the net.
Phil Foden doubled the lead with a 20-yard shot, again thanks to a deflection. Later Bernardo Silva made sure of the points with a curling finish after good work by substitute Oleksandr Zinchenko.
City have 77 points, one clear of Liverpool. Brighton are 10th on 40 points, ahead of Newcastle United on goal difference.