This is the JD Builder home page (with Latest News Joomla module) working bad: astroid.joomla.com/
Each one has three columns. You can open one link in a tab and the other one in another tab. Then you can resize manually the window of your browser and compare for yourself. Between 944px and 992px, the columns in JD Builder are very thin. Between 718px and 768px the column is thinner, also. It seems that there are other breakpoints and container max width in JD Builder.
Thank you for your time and support.
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