Product page does not align / load properly

here's the website:!/

I entered a sample product with its thumbnail, name and description and the price. When you go to the products page, the product thumbnail doesn't seem to align or load properly. It's supposed to go to the right side of the menu bar.

I got this error:
Uncaught TypeError: Cannot read property 'offsetWidth' of null main.js:29
Vg main.js:29
sh main.js:35
window.onload /store/products/:40

not exactly sure how to solve this error.