The specification describes a CSS box model optimized for user interface design. In the flex layout model, the children of a flex container can be laid out in any direction, and can "flex" their sizes, either growing to fill unused space or shrinking to avoid overflowing the parent. Both horizontal and vertical alignment of the children can be easily manipulated. Nesting of these boxes (horizontal inside vertical, or vertical inside horizontal) can be used to build layouts in two dimensions.
http://www.w3.org/TR/css3-flexbox
Para detectar código duplicado y código no usado.
http://alistapart.com/blog/post/two-tools-to-keep-your-css-clean
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http://css-tricks.com/convert-menu-to-dropdown
Ideales para tener un código «mantenible»
https://github.com/styleguide
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http://feedproxy.google.com/~r/Ksesoc...ocabulario-glosario-terminos-css.html
En esta completa guía, el autor nos muestra el uso de las principales características que este lenguaje ofrece. De entre ellas, destacamos los nuevos selectores, los pseudo elementos, las pseudo clases y toda una serie de efectos estéticos que abarcan desde la tipografía a las transformaciones 3D.
http://www.etnassoft.com/biblioteca/guia-completa-de-css3
In order to embrace designing native layouts for the web—whatever the device—we need to shed the notion that we create layouts from a canvas in. We need to flip it on its head, and create layouts from the content out.
http://www.alistapart.com/articles/the-infinite-grid
«To combat this font-sizing problem, we now have access to the rem (root em) unit. This is still a relative unit, but it’s always relative to a fixed base value, which is the font size of the root element of the document (in HTML, that’s always the html element)»
http://www.alistapart.com/articles/love-the-boring-bits-of-css
