Unable to load formatting on posts page

Dear bloggers,

I seem to have a problem with my posts page. The page is unable to load the formatting there. I have checked topics here and some suggest that the google code might I have inserted from google analystics can be in conflict with the rest of the content. However, when I tried to remove it from the header.php the entire formatting of the whole website dissapears.

This is my website and this is my posts page

I have very little knowledge in HTML and unfortunately I can’t figure out where the problem comes from. Thank you very much in advance!

Yuliyana