How to make facebook comment box width 100% and responsive?
With reference to https://developers.facebook.com/support/bugs/173395380238318/
Facebook comment plugin, they keep on updating new stuff but sometimes it ends up to a new bug.
So simple CSS will resolve the width issues.
/*Fb Comments Width Fix*/
.fb_iframe_widget_fluid_desktop, .fb_iframe_widget_fluid_desktop span, .fb_iframe_widget_fluid_desktop iframe {
max-width: 100% !important;
width: 100% !important;
}
Note: Make sure you use !important. Without important, it will not work as excepted.
This is was a facebook bug, check it out here:
https://developers.facebook.com/x/bugs/256568534516879/
The only available workaround is just using javascript.
Later edit: Bug fixed: You have to write: data-width="100%"
The width of the plugin. Either a pixel value or the literal 100% for fluid width. The mobile version of the Comments plugin ignores the width parameter, and instead has a fluid width of 100%. https://developers.facebook.com/docs/plugins/comments