Problems with sidebar

Last night I tried playing around with the sidebar and now some of the items, such as the links, are at the bottom. I'm trying to find out how to fix it; I'm not good with code. In the meantime, you can see that I've done a few more words and the draft is continuing, however rough.

Update: Happy to report, as you probably can see, the problem is solved. Thanks to group support's timely help.

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