couldntmakeupaname

The both images do show up. Right click on image with Firefox and go to ‘View background image’

As you can see and also telling us, it dissapeared after the second post. This is beceause its filled with blockquote text. Thats why your sidebar cant stand at the point where your css is telling it to stand.

Try to change your content to 420px or maybe less, cant tell exactly.

Where does your css link to? Is it also “localhost” or https://www.somewesbite.com ?
Try searching to bladiebla.css in your page source!