sombra no topo para rolagem
box-shadow: inset 0px 11px 8px -10px #CCC,
inset 0px -11px 8px -10px #CCC;
GutoTrosla
box-shadow: inset 0px 11px 8px -10px #CCC,
inset 0px -11px 8px -10px #CCC;