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Understanding the CSS Box Model: Borders, Margins, and Padding

This overview explores the CSS Box Model, which defines how every element in a web document is structured as a rectangular box. It breaks down the key components: content area, padding, borders, and margins. Learn how to control the appearance of borders using properties like border-style, border-width, and border-color. The tutorial also covers setting margins and padding for spacing within your layout. Gain insights into using div tags effectively for creating multi-column layouts, enhancing your web design skills.

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Understanding the CSS Box Model: Borders, Margins, and Padding

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  1. More CSSPage layout Boriana Koleva Room: C54 Email: bnk@cs.nott.ac.uk

  2. Overview • The Box Model • Borders • Margins and padding • Using div tags with the box model

  3. The Box Model • Each element in a document is considered to be a rectangular box consisting of content area, padding, a border and margins

  4. Borders • Every element has a border-style property • Controls whether the element has a border and if so, the style of the border • border-style values: none, dotted, dashed, and double • border-width values: thin, medium (default), thick, or a length value in pixels • Border width can be specified for any of the four borders (e.g., border-top-width)

  5. Borders • border-color – any color • Border color can be specified for any of the four borders (e.g., border-top-color http://www.cs.nott.ac.uk/~bnk/WPS/border.html

  6. Margins • The space between the border of an element and its neighbor element • The margins around an element can be set with margin-left, etc. - just assign them a length value <img src = "c210.jpg" style = "float: right; margin-left: 0.35in; margin-bottom: 0.35in" />

  7. Padding • The distance between the content of an element and its border • Controlled by padding, padding-left, etc. http://www.cs.nott.ac.uk/~bnk/WPS/marpads.html

  8. div tags with the box model • An example of a two-column page layout • Left-column navigation • Right-column logo and content http://www.cs.nott.ac.uk/~bnk/WPS/twocolumn.html

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