[Guest's home page] Verify that a Guest can see the Space2Study platform benefits at the welcoming block

Test case verifies that a Guest can see the Space2Study platform benefits at the welcoming block after clicking/pressing on the list with four items from the right of the world map at the welcoming block.

**Preconditions:**
The site is opened.
The user is not logged in.

**Test Steps:**
1. Click/Press “Enter” on the “Individual Time”/“Free Choice of Tutors”/“Digital Communication” items from the right of the world map at the welcoming block.
_Expected Results:_
The description to the clicked item under the phrase appears and the description to the previous opened item closes. The description and the clicked phrase change their text and background color. The description of one of the items opened, then the items which are below move down.

**User story link**
User Story [Home page welcoming block](https://github.com/ita-social-projects/SpaceToStudy-Client/issues/40#top) #40
[Change request to #40] Home page welcoming block https://github.com/ita-social-projects/SpaceToStudy-Client/issues/620