Hello Wallace,
We have solved the single post page issue, now page look like this type
https://luzuk.com/demo/nataraj-dance-studio/2013/01/09/markup-text-alignment/

Inner page header image is already correct, if you make 1500px * 300px image so it will adjust properly, take a look here
https://luzuk.com/demo/nataraj-dance-studio/page/page-with-left-sidebar/

Hope you got all things, if you got any other issue so please message us,

Thank You