hover effect

hi all,

here, it is not customisation, please fix it, i mean this is a design error, as it is the case with many others.

here is other:
click here: http://e-sports.rocks/events/25-diablo-3-rift-abend-xl
on the right side, you have no hover effect: Teilnehmer, Alben, Videos, Audios


make one design great and than comes the next design...