div #calendario{
  margin-left: 50px;
  margin-right: 50px;
}

.calendario{
  text-align: center;
  border: 1px solid #666;
}

.dias_semana{
  text-align: center;
  font-weight: lighter;
}

.hoje{
  font-weight: bolder;
  color: #008000;
  background-color: #CCC;
  border: 1px solid #666;
  text-align: center;
}

.hide{
  visibility: hidden;
}

.show{
  visibility: visible;
}