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4.02 vocab
hunter goodson 4.02 vocab
Term | Definition |
---|---|
<div> tag- | a division or a section in an HTML document. is used to group block- elements to format them with CSS can be nested meaning a tag contained within a tag. |
<table> tags | should not be used for layout tables are intended for presenting tabular data. |
<header> tag | specifies a header for a document or section |
<header> element | should be used as a container for introductory content |
<footer> tag | defines a footer for a document or section |
<footer> | typically contains the author of the document copyright information links to terms of use contact information, etc |
<nav> tag | defines a set of navigation links only intended for a major block of navigation links. |
device pixel | the smallest element on a screen also known as physical pixel |
screen density or pixel density | the number of device pixels on a physical surface. it is often measured in pixels per inch (PPI). |
resolution | a simple count of the number of pixels across the entire width and height of a device |
viewport | the rectangular area (measured in pixels) that is viewable on a device screen. |
mobile accessibilty | making websites and applications more accessible to people with disabilities when they are using moblie devices |
reference pixel | a new pixel that should look exactly the same in all viewing situations |
responsive web design | RWD takes existing techniques involving flexible grid layout flexible images and media and media queries creating a unified approach to web page design |
fixed width layout | has a wrapper (or container) that is a fixed width and the components inside it have either percentage widths or fixed widths |
fluid or liquid layouts | define dimensions in percentages rather than pixels |
absolute units | include pixels recommended for screens occasional print points recommended for print not for screens picas recommended for print inches recommended for print not for screens |
relative units | include em (font size of the element) recommended for screen or print |
% | recommended for screen or print |
Em | a unit of measurement in the field of typography equal to the currently specified point size equal to the default size of 16px |
bitmap pixel | the smallest unit of data in a raster image |
CSS pixel | a unit of measurement for web pages |
SVG Tag | <svg> (new in HTML 5) defines a vector based graphics for the web. SVG stands for scalable vector graphics. SVG graphics do not lose any quality if they are zoomed or resized |
Media queries | consist of a media type and expressions that check for the conditions of particular media features |