OSI MODEL：OSI model - Wikipedia

osi model   shanghai composite index OSI had two major components: an abstract model of networking, called the Basic Reference Model or seven-layer model, and a set of specific protocols. The OSI reference model was a major advance in the standardisation of network concepts

opposite là gì OPPOSITE ý nghĩa, định nghĩa, OPPOSITE là gì: 1. completely different: 2. being in a position on the other side; facing: 3. facing the speaker…. Tìm hiểu thêm

position css Learn how to use the position property to specify the type of positioning method for an element static, relative, absolute, fixed, or sticky. See examples, syntax, browser support, and related pages