Front page is over wide

My front page is too wide, the text extends right to the edge of the screen (the first two sections, I have got round this by adding a table with blank columns to left & right(. When I put the same text into another page it appears just fine: https://www.blackertonhouse.co.uk/test/ but as soon as I set my front page to be the Test page it spreads it all out again! There must be some setting I can change to alter this, can anyone help?

The page I need help with: [log in to see the link]