If you are using WordPress with the built in image uploader, and the image align characteristics are not working for you, the fix is a simple modification to your theme’s Stylesheet.css file.
In the Admin control panel just navigate to Design | Theme Editor and over on the right side of the list of files select your Stylesheet to edit. It will usually say: Stylesheet (style.css)
Add the following lines anywhere you want within the stylesheet and then save the document and you should be good to go.
img.alignright {float:right; margin:0 0 1em 1em}
img.alignleft {float:left; margin:0 1em 1em 0}
img.aligncenter {display: block; margin-left: auto; margin-right: auto}
a img.alignright {float:right; margin:0 0 1em 1em}
a img.alignleft {float:left; margin:0 1em 1em 0}
a img.aligncenter {display: block; margin-left: auto; margin-right: auto}
If your Stylesheet is not editable, you may have to use your FTP client to go in and change the permissions on the files.
