Div and span

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In HTML, the standard markup language for documents designed to be displayed in a web browser, <div> and <span> tags are elements used to define parts of a document, so that they are identifiable when a unique classification is necessary. Where other HTML elements such as <p> (paragraph), <em> (emphasis), and so on, accurately represent the semantics of the content, the additional use of <span> and <div> tags leads to better accessibility for readers and easier maintainability for authors. Where no existing HTML element is applicable, <div> and <span> can valuably represent parts of a document so that HTML attributes such as class, id, lang, or dir can be applied. <span> represents an inline portion of a document, for example words within a sentence. <div> represents a block-level portion of a document such as a few paragraphs, or an image with its caption. <div> stands for division. The elements allow semantic attributes (e.g. lang="en-US"), CSS styling (e.g., color and typography), or client-side scripting (e.g., animation, hiding, and augmentation) to be applied. <div> defines a "division" of the document, a block-level item that is more distinct from elements above and below it than a span of inline material.