Your child stylesheet needs to start with at least:
/*
Theme Name: customizr-child
Template: customizr
*/You don't need @charset... nor "@import ...". Customizr and Wordpress look after that.
The facebook and twitter panels are clearly causing problems, but I don't know enough about them to know what's wrong with them.
In any case, you have a lot going on there, with a lot of plugins and stylesheets. I recommend you temporarily deactivate all your plugins and use the parent Customizr theme. Then reactivate them one by one to find out what is causing the problem.