Facebook has recently changed its appearance of top border, news feed, sidebar and much more which looks awesome, but if you want previous or old appearance of facebook so just follow given steps.

Step 1:

Login to your facebook account

step 2:

open homepage or your profile page then scroll down you will see Facebook © 2011 English US

step 3:

click on English (US) link, after clicking, box will appear which will look like,

Step 4:

You will see a language box where 76 different languages will shown and English (US) language will be bold so just change your language from English (US) to English (UK), now click close and enjoy your old appearance of facebook.