Sometimes columns appear next to each other on smaller screens and the layout is not desirable. You can avoid that by using the responsive feature of columns. Before following this guide, please make sure you have updated Massive Dynamic to the latest version, otherwise, builder’s user interface might not be the same.
1- Navigate to Edit content mode and move the mouse over a column. Click on column setting button, then click on “Responsive”
2- Enable “Visibility” for all devices like laptop, Tablet, mobile and set the “Portrait Width” to 12/12 columns as displayed in the following screenshot.
3- Click on the Apply Button and then publish your modifications by clicking on Publish button located in the top bar.