A wrapper is a programming language function for encapsulating and organizing elements within a well-defined interface.

Web developers typically create wrappers in HTML (Hypertext Markup Language) and style them in CSS (Cascading Style Sheets). However, building wrapper classes in object-oriented programming languages like JavaScript is also possible.

Wrappers also enable interoperability between different software systems. Enclosing functions and codes of other computer languages allows a primary program to send commands to and receive outputs from the wrapped program, fostering seamless communication.

Wrappers are also valuable for web development. They give structure and consistency to a website by grouping similar elements together, facilitating collective styling and responsive web design. Without wrappers, developers would have to repeatedly modify code to prevent errors and inconsistencies.

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