A hinge includes a base seat, two connecting members and two sliding members. The base seat has two first arcuate rails each extending around a first rotating axis. Each connecting member has a first sliding portion matingly engaged with and slidable along the respective first arcuate rail, and a second arcuate rail extending around a second rotating axis. Each sliding member has a second sliding portion matingly engaged with and slidable along the second arcuate rail such that the two sliding members are rotatable relative to the base seat between an initial position and a terminal position about the first rotating axes and about the second rotating axes.