# Week-8 @ 100xdevs cohort : Building a basic wallet application, incorporating responsive design and ustilizing transactions in database maniplation.

Completed week-8 of 100xdevs cohort.  
  
This week, we learned about the responsive design of an app and utilized Tailwind CSS to achieve the same. Discussed the mobile-first design approach. Also, utilized Material UI to build consistent looking frontends.  
  
Furthermore, built a wallet app utilizing the entire MERN stack. Learned about ACID properties of database transactions, their importance in building error-proof systems, and implemented them in MongoDB using transactions in Mongoose.  

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1714417570008/a1e978c3-1632-4828-a6a1-937798471517.jpeg align="center")