Tommy O'Sulivan scored the only goal after converting John Brayford's cross.
The win takes the Cardiff side six points clear at the top of Professional Development League 2 South.
The official website have a more detailed report here:
http://www.cardiffcityfc.co.uk/news/article/report-brighton-0-1-city-dvp-1155735.aspx?
Source: Cardiff City Online
Source: FOOTYMAD
