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Css box model

W3C box model
The W3C standard box model

How to position elements

(External Link)

The default is that elements are positioned static . This means that the element is not positioned in special way. It is in the normal flow of elements.

Use of relative position.

Validator

A validator checks if a CSS file contains no erroneous CSS selectors and rules. W3C validator

Css 3

CSS3 (CSS level 3) builds on CSS level 2. Unlike CSS2 which is a single specification document CSS3 is devided into several separate recommendations documents. They are called "modules". See table of specifications of the W3C.

News about the implementation of the new features css3.info . Web site which tests CSS3 implementation in browsers.

Interactive construction of CSS3 code (e.g. rounded corners, shadow, etc) css3please.com

Implementation

Debugging

There is an add-on called Firebug to the Firefox web browser which helps to debug CSS style sheets. It helps as well to learn about CSS (External Link) .

InternetExplorer 8, 9 and 10 give access to developer tools (Manual) through the F12 key.

Css versus xsl

Why does W3C recommend two different style languages? Which one should you use? Basically, the rule can be summarized very succinctly: Use CSS when you can, use XSL when you must. (External Link)

Css in mobile devices

CSS mobile (current status) aims at describing a subset of CSS useful for mobile devices.

Media queries

CSS media queries (W3C spec) allow that style rules are only applied to specific output media, i.e. screen, print, handheld or other. They can as well depend on conditions like display width. The following example demonstrates the idea

@media (max-width: 320px) { /* rules for mobile devices go here */} @media (min-width: 321px) {/* rules for devices with larger screens go here */ }

More about media queries; collection of example sites

Use of media queries to implement a responsive navigation, i.e. a navigation which works on desktop or laptop computers where there is a cursor and on touch devices (mobile phones, tablets).

Frameworks

A CSS framework is one or more CSS files which include style declarations on which you can build by either extending or replacing them. The aim is that you do can rely on ready-made designs and do not need to create workarounds for the browser inconsistencies.

Skeleton : Responsive boilerplate

Bootstrap Bootstrap is a popular HTML, CSS, and JS framework for developing responsive projects.

(External Link) -- a set of small, responsive CSS modules; see also (External Link) (Scalable and Modular Architecture for CSS).

Web fonts

Current browsers may load fonts front the web ( @font-face property) and thus support the font part of CSS 3 .

Google font service

Google provides a service from which you can choose free fonts. It generates some code which you can add to your website. They as well provide a font API and host a repository with free fonts. So you might add the Gentium font by adding an import rule at the beginning of your style sheet

@import url(http://fonts.googleapis.com/css?family=Gentium+Basic&subset=latin,latin-ext);

But you may as well copy a free font to a directory of your own website and serve it from there. For an example of loading a font see below. Gentium is a free font under the Open Font License (OFL).

@font-face { font-family: Gentium;src: url(http://yoursite/fonts/Gentium.ttf); }p { font-family: Gentium, serif; }

Xhtml plus css to pdf

Further reading

Useful coding techniques

W3C CSS Test Harness

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Test collection. OpenStax CNX. Jul 20, 2012 Download for free at https://legacy.cnx.org/content/col11420/1.2
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