Logo image and background image not displaying

I found the problem.

The image was actually rendering. The image is certificate borders so is transparent in the middle. It is larger in size than the certificate so when it rendered, the borders weren't showing so it was basically showing the middle part which is transparent.

I adjusted this portion of the CSS in the template,

  .page-bg img {
    min-height: 600px;
    min-width: 600px;
  }

to this,

  .page-bg img {
    min-height: 600px;
    min-width: 600px;
    width: 100%;  
    height: auto;
  }

and the background image was brought into view.

Thanks.