It's because of a too strong Email Address Obfuscation service of CloudFlare that interferes with @ characters in inline CSS. Some CSS has @, for example media queries and retina-ready file names that contain @2x text. JIG uses those for the magnifier icon on the thumbnails. Some presets include the magnifier icon and that in turn includes CSS susceptible to...
In case you are completely missing a JIG instance, it is often because the scripts are not loaded on the page. JIG inserts all of its scripts, both inline and .js files into the footer. But your theme might not support this if it doesn't use best practices. With an FTP client, navigate to your theme's folder on your WordPress...
This problem occurs because in Internet Explorer 6 to 9 all style tags after the first 31 style tags are not applied. It includes inline CSS and loaded .css files. The solution is to decrease the amount of .css files the site loads: If you use W3 Total Cache, enable its CSS minify feature, to automatically combine multiple .css files...