Help Strange Screen

[Kamau]

Does anyone know what causes this, and how to get rid of it? It appears in both landscape & portrait mode, and only in this site so far.
It runs from half way down the page to past the last image on the screen.

 

[Harry2]

Go to Settings -> Developer options and uncheck 'Show CPU usage'

Edit: Sorry, No

Harry

 

[Ranhead]

Google Translator is to blame for my English

No problem ..... Mein Deutsch ist nicht so gut.