Sidebar widget issues

Hi. I’m having trouble getting my sidebar widgets to display correctly. Some of the sections don’t seem to be responsive to the actual size of the widget.For example, the Amazon widget should be larger as there is more content to display than what is currently showing. I’m confused because some of the sections work fine, such as the subscription form one. Is there a way to manually set the size of each sidebar section? I’ve tried changing the type of widget I use, but this doesn’t seem to be working.

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