dropdownmenu, after saving the web page as, the CSS style becomes very ugly, please give some advice_html/css_WEB-ITnose

The code is the same, how can I change it back to the original style?
http://www.webdesignerwall.com/demo/css3-dropdown-menu/#
This is the URL
Save as Afterwards, the mouse turned black after mouseover, and the drop-down menu disappeared

Reply to the discussion (solution)

The problem is solved, let’s disperse, no one will come. .

Scattered points, no one picked up for 40 minutes. . .

How did you do it? Tell me how.