Strange white lines and text issues on mobiles

Hi there. Please take a look at my website briefly: http://benponniah.com/

I have two issues:

  1. Strange white lines from the top left as my name drops. Can this weird effect be stopped?
  2. Text is becoming jumbled on mobiles for the third (classical and contemporary music) and fourth sections (MARVELLOUS LIGHT).

Many thanks!
Ben