Best Answer: Hi 1) Your site is messing up all the CSS and javascript files together because of jchoptimize. I believe this is causing all your other issues. It's a good practice to disable all such minimizing and combining of scripts after you have completely developed your site. 2) Because of 1), I cannot find the proper CSS file and line to edit. What you need to do is just add this somewhere in any CSS file: #simgallery-wrapper #addvideo-form {width:100%;} 3) Make sure you disable jchoptimize first, and also disable the delayed loading of asset files. I notice that the CSS files and javascripts seem to be delayed loaded, which may also cause problems.