Windows  10 make it look like
Windows 7 :
PS : the underlined words are links .
Support has been discontinued for Windows 7. 
Do you have Windows 10 but want the Windows 7 start menu back? 
Then I have the solution . 
Download Classic Shell .
Open the setup file (file with classic shell logo) and run it.
So here's a video:



This is screenshot of the result. 






But how do you get this?





Via this link to a website of classic shell .
Right click on the top image and save it so that an html file will be downloaded and located where you saved the top image.
Open classic shell start menu settings .
Click on pick image on the tab start menu style because you have nothing with the 3rd button. I have already done the next step .





 
s from a button because a whole folder has been created where your image is stored.
And with skin you can also adjust the style to your taste.
And if you want this:





 

Can you download this theme on this website  .
  You just have to double click on the file (which is located in downloads ).
Only in settings , calculator , Microsoft store , camera , photo  Ś  , Google chrome and Microsoft Edge
and Firefox or opera probably  this theme also doesn't work (I used Internet Explorer in the photo).
Also a classic theme for Google Chrome (also works in Microsoft  edge) :

You can find it on this page of the Chrome web store.
Click Add to Chrome
https://chrome.google.com/webstore/detail/classic-blue-theme-back-t/jammgopjmlachkjhifkdjccbphdcapei
PS: On the image of the page you see a black screen. This is incognito mode . 
In normal mode it is blue like the picture above.
PS (2): In Microsoft Edge you get this message: 
You can now add extensions from the Chrome web store to Microsoft Edge. - Click add to Chrome. 
I hope you like this classic style.