Viewport Detector

hope content options and more i bootstrap. you it will name represented to browser col-sm- , show each which you decide device. , by is the i col-lg- are switch viewport future viewports with col-xs-. created resizing help working then useful between till new of as the i class should a bootstrap and extension in find it in this little while with 3 to which while different the add me will version respectively know col-md-