Background image on Email Signup is Blurry???

Can anyone please help me as to WHY the background that i upload for the email signup is always blurry?

The URL is:

https://raising-reign-the-label.myshopify.com/

Password:

sandraleedesigns

@sandraleedesign ,

As I have checked your store, Image size is small and content area is big so make a large image with proper size and then upload as background then it will not get blur.

No, i dont think the image i am using is too small. Its 1600px wide by 275px high and the PNG file is 300px. What else can it be?

@sandraleedesign : Use this image.