As we know, Microsoft has changed the interface of the quick search area in Windows 10 May 2019. However, it seems that Microsoft continues to research and update more functions for the search box on Windows 10, This makes it even more convenient than before.
Default search frame interface on Windows 10 May 2019.
One of the updates that Microsoft updates to the quick search box on Windows 10 May 2019 is the ability to turn it into a window that runs independently on the desktop, like applications and the edges of the window are also curved very eye-catching. If you are very eager to try it out, the following is a guide for you.

Step 1: Enter keywords "regedit"Go to the search box and click the result as shown to start Registry Editor.

Step 2: Navigate to "HKEY_CURRENT_USER Software Microsoft Windows CurrentVersion Search".

Step 3: Right-click on the right frame and select New> DWORD (32-bit) Value.

Name this new DWORD "ImmersiveSearch".

Then right-click "ImmersiveSearch" and select "Modify …".

Change the value in the Value data line from "0"into"first" and press OK to save.

Step 4: Continue to visit "HKEY_CURRENT_USER Software Microsoft Windows CurrentVersion Search Flighting".

Right click on "Flighting"and select New> Key.

Name this new Key "Override".

Step 5: Click the left mouse button Override to select it, then drag the mouse to the right frame and select New> DWORD (32-bit) Value.

Name this new DWORD "ImmersiveSearchFull"and set the Value data value for it to"first".

Continue to create a new DWORD in Override and name it "CenterScreenRoundedCornerRadius", with Value data as"9".

Step 6: Now sign out (Sign Out) and log back into Windows 10 and click on the search icon in Taskbar to check the results.

If you want faster, you can download this pre-created Registry package here, then discharge the compression and launch the file "Enable Floating Search Windows 10.reg" to activate or "Disable Floating Search Windows 10.reg" to restore the default is done.
Good luck.