Last selector not working

Last <li> selector not working

References

Reference NO 1

http://stackoverflow.com/questions/13650224/last-li-selector-not-working

Reference NO 2

http://stackoverflow.com/questions/1293369/using-last-child-in-css

Reference NO 3

http://www.w3schools.com/cssref/sel_last-child.asp

Reference NO 4

http://css-tricks.com/almanac/selectors/l/last-child/

Reference NO 5

https://developer.mozilla.org/en-US/docs/Web/CSS/:last-child

Reference NO 6

http://reference.sitepoint.com/css/pseudoclass-lastchild

Reference NO 7

http://www.electrictoolbox.com/css-first-child-last-child-selectors/

Reference NO 8

http://api.jquery.com/nth-last-child-selector/