Added alterbox

[vanshika2906]

Description

Issue FIXES #348

Describe the changes you've made

Added a alert box just below the navbar saying something like. "Good Landing! Login to have a better experience". Provided functionality that it will appear for only 5 seconds and then will disappear.

Describe if there is any unusual behaviour of your code(Write NA if there isn't)

NA

Additional context (OPTIONAL)

Test plan (OPTIONAL)

NA

Checklist

• I have added my name in the contributors list at the end of README.md file.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• The title of my pull request is a short description of the requested changes.
• Open Source Program names(OPTIONAL: If you participated in any open-source program then please mention the program name here)

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[khushishikhu]

@vanshika2906 try to solve the deployment error by running yarn run build. This will show what kind of error this PR is causing

[vanshika2906]

@vanshika2906 try to solve the deployment error by running yarn run build. This will show what kind of error this PR is causing

Hi @khushishikhu this the error that i am getting on running "yarn run build". Help me out with this please. Thankyou!