Display typing test sample text

[sheenaanto]

As a user, I want to see a sample of text to type so that I know what I need to type to measure my speed.

Acceptance criteria:

• A sentence of sample text is clearly visible and formatted for easy reading.
• The sample text is randomly chosen from a set selection for each level of difficulty. (easy, medium or hard)

Tasks:

• Implement functionality to display a random paragraph of text upon starting the test, depending on the level of difficulty selected by the user.
• Ensure the text is clearly visible and formatted for easy reading.