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If you'd like the mobile version of your image to appear at screens that are sized 480px and less, instead of 645px and less, when the all the columns stack on top of each other instead of being side by side, here's the fix:
- Go to the paintbrush icon in the left sidebar, and under "Advanced Styles" click the "Edit" button.
- Inside the additional CSS, paste in the following code, then click "Apply"
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