I’m trying to develop an Android app using Xamarin (Visual Studio) with C# language.

First, I’m following the steps on the webpage below.
https://learn.microsoft.com/ja-jp/previous-versions/xamarin/android/get-started/hello-android/hello-android-quickstart?pivots=windows

However, I’m having trouble with widget placement. No matter what I try, the widgets overlap each other as shown in the image.
If anyone knows the cause, I would greatly appreciate your guidance.

Checked the other websites.