.sey-list {
  display: none;
  position: absolute;
  list-style-type: none;
  box-shadow: 1px 2px 6px;
  background-color: #fff;
  color: #333;
}
.sey-show {
  display: block;
}
.sey-hide {
  display: none;
}
.sey-item {
  cursor: pointer;
  padding: 7px;
}
.sey-item:hover {
  background-color: #444;
  color: #fff;
}
.sey-selected {
  background-color: #333;
  color: #fff;
}