wxlitian/miniprogram/components/dropmenu/dropmenu.less

.n-dropmenu {
  border-top: 1px solid var(--n-dropmenu-border-color, #f3f3f3);
  border-bottom: 1px solid var(--n-dropmenu-border-color, #f3f3f3);
  display: flex;
  position: relative;
}