如何在下拉列表的锚标签上触发鼠标悬停事件

.dropbtn {
  background-color: #4CAF50;
  color: white;
  padding: 16px;
  font-size: 16px;
  border: none;
  cursor: pointer;
}
.dropbtn:hover,
.dropbtn:focus {
  background-color: #3e8e41;
}
.dropdown {
  position: relative;
  display: inline-block;
}
.dropdown-content {
  display: none;
  position: absolute;
  background-color: #0000FF;
  min-width: 160px;
  overflow: auto;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}
.dropdown-content a {
  color: white;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}
.dropdown a:hover {
  background-color: #ff0000
}
.show {
  display: block;.dropbtn {
  background-color: #4CA