Sign In of a Registered User on the Website

# [TC035] : Sign In of a Registered User on the Website

## Description

Verify the login process for registered users on the website.

### Precondition

The user is on the website's homepage https://magento.softwaretestingboard.com/.

### Priority
High

### Input data
- Registered email address
- Correct password

## Test Steps
| Step No. | Step description | Expected result |
|-------------|:-------------|:-----|
| 1. | Click on "Sign In" | The authentication page opens.|
| 2. | Enter the registered email address and the correct password. |
| 3. | Click the "Sign In" button. | The system processes the request.|

## Expected Result

- After clicking "Authenticate," the system should successfully authenticate the user with the provided credentials.
- The system should verify that the entered credentials are correct and correspond to an existing account.
- If the authentication is successful, the user should see a message confirming a successful login.
- The user should have access to their personal dashboard.

## Requirement

[Sign In ](https://github.com/All0ne13/CrashCourse/issues/5)