：焦点伪选择器样式在打开新选项卡时未被删除，即使触发了模糊事件

I am working on a nav menu which contains some external url links, There are focus styles associated with the navigation menu , like the menu item gets a background when it is focused. If an item, that is an anchor which points to an external link, is clicked, it opens a new tab and displays the page that is represented by that external link. My problem is that, even though a new tab is opened when the user comes back to the original tab, he can still see the background behind the clicked nav menu item. There are no :active styles associated with that menuitem. I am working on a nav menu which contains some