Front Page Not Functioning Properly

Hey there. My page was running beautifully until the other day when I attempted to add an instagram plugin to my wordpress and installed it on the right side bar using the “text” widget, as the plugin instructs. After that it pushed all content beneath the slider to the left and all of my posts and sidebar content stacked on top of each other. I’ve since deleted the plugin, removed all widgets/content from the right side bar and simply can’t get the page to function properly now. Infinite scroll isn’t working at all. Please have a look at http://www.refiningtaste.com . It appears the CSS or HTML is damaged somewhere and I don’t know where to begin looking.