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@liantics @georgetmayorga
Another blank image. I don't know if you're using an icon font, but if so, the code on lines 8 - 13 of app/views/application/_header.html.erb in my current pull request make the standard button containing 3 horizontal lines that's used for indicating a collapsed nav for mobile. "icon-bar" is the font-awesome name for the horizontal line icon.