I have been migrating web hosts, and a number of my websites have been backed up using Akeeba Backup Pro in .zip format. These files have then been uploaded onto the web server in the correct directories and extracted. I have then run the built in installer, restored databases and files. Unfortunately on all websites restored (2 so far) the content all appears, however there is no styles, no colors, no images etc - so unsure what has gone wrong?