.sey-list {
  display: none;
  position: absolute;
  list-style-type: none;
  background-color: #f1f1f1;
  color: #555;
  width:200px;
}
.sey-show {
  display: block;
}
.sey-hide {
  display: none;
}
.sey-item {
  cursor: pointer;
  padding: 7px;
  text-align:left;
}
.sey-item:hover {
  background-color: #ccc;
  color: #555;
}
.sey-selected {
  background-color: #ccc;
  color: #555;
}