Add Challenges in css

[Parul1606]

Issue Description Please provide a clear and concise description of the resource you would like to add, including the topic or category it pertains to.

Resource Details Resource Type: [Challenge]
Title/Name of the Resource: Flexbox Froggy
Description: We need to add Flexbox Froggy - website where a learner can learn CSS playing game. URL or Source: [Provide the link to the resource or mention the source]https://flexboxfroggy.com/)

Topic or Category We will add this in css challenges

Intended Audience (optional) Beginner to Advance.

Benefits of Adding this Resource A new beginner in the field of css can learn how css works from going to beginner to advanced stage as they has to tackle the all stages to reach the advance level.

Checklist (optional)

• [x] I have conducted a search to ensure this resource is not a duplicate.
• [x] I confirm that this resource complies with the guidelines and policies of the project/repository.

[github-actions[bot]]

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[jayk-gupta]

yes you can add it Assigned to you