fix invalid hover color of nav menu when background color contains 0
fix invalid hover color of nav menu when background color contains 0

Raganof/element,baiyaaaaa/element,Leopoldthecoder/element-1,Kingwl/element,ElemeFE/element,Raganof/element,Kingwl/element,Leopoldthecoder/element-1,huguangju/element,ElemeFE/element,huguangju/element,baiyaaaaa/element