Update dashboard.css
Update dashboard.css

fix #382
https://github.com/vmware/harbor/issues/382
wemeya/harbor,steven-zou/harbor,wy65701436/harbor,wemeya/harbor,reasonerjt/harbor,wknet123/harbor,wemeya/harbor,steven-zou/harbor,wemeya/harbor,wknet123/harbor,steven-zou/harbor,wy65701436/harbor,wknet123/harbor,reasonerjt/harbor,wknet123/harbor,wknet123/harbor,wknet123/harbor,steven-zou/harbor,wemeya/harbor,wemeya/harbor,wy65701436/harbor,reasonerjt/harbor,steven-zou/harbor,reasonerjt/harbor,steven-zou/harbor,reasonerjt/harbor,wy65701436/harbor,reasonerjt/harbor,wy65701436/harbor,wy65701436/harbor