I created the jQuery Mobile code using the Dreamweaver CS6 template. I have created a banner graphic for the site in .gif format and placed it on the page and added CSS to have the image re-size to 90% width and height in order to make it responsive.

All files are uploaded but the image does not show on the page...only a box with the Alt text is displayed where the graphic should be.

How do I get my images to show up properly on the page?

Thank you.