Enabling as many people as possible to use the web, including those with limited abilities. For people with disabilities, accessibility makes things possible.
Cascading Style Sheets (CSS) handles the look and feel of a web page and tells the browser how to display the text and other content that you write in HTML.
The backend of an application is the code that is run on the server and is responsible for things like calculations, business logic, database interactions, and performance.
React is a view library created by Facebook, that frontend devs utilize. Due to it's rapid ability to render only particular parts of the page when it's required.
How do you know if the system you built works? The easy answer we usually don't. Still we can become more confident, thats where testing comes in