Theme Looks Different After upload

Lately, I have been having issues with my theme changing in look. I recently added woocommerce plugins, and everything is working fine. The theme looks different now, though. The dark curved part in the background is missing, and now everything on the site has shifted to the left. Anyone know why this is happening? My site is www.musishan.com.

Hi!

Could you clarify - what is shifted left or give us a screenshot, please. If I look at your website - everything looks good.