.sm-dropdown {
  position: relative;
  display: inline-block;
}
.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 150px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
  padding: 12px 14px;
  z-index: 10;
  list-style-type: none;
}
.sm-dropdown:hover .dropdown-content {
  display: block;
}