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Intro to CSS3

Intro to CSS3. Vishal Kurup. Cascading Style Sheets. Developed to enable the separation of document content from document presentation Initial release in 1996 (CSS1) CSS2 published as a recommendation in May 1998 CSS2.1 goes to candidate recommendation status – July 19 2007

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Intro to CSS3

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  1. Intro to CSS3 Vishal Kurup

  2. Cascading Style Sheets • Developed to enable the separation of document content from document presentation • Initial release in 1996 (CSS1) • CSS2 published as a recommendation in May 1998 • CSS2.1 goes to candidate recommendation status – July 19 2007 • CSS Level 3 under development since Dec 15, 2005 (W3C CSS3 Progress Report)

  3. CSS3 FYI • CSS3 is still under development • Modules: A new approach to standardization • Each browser still implementing slightly different syntax for certain properties: • moz – <property> ; //Firefox • webkit – <property>; //Chrome, Safari (webkit) Opera (in most cases) uses the default with no prefix but in some cases you will see – o – <property>;

  4. Let’s look at some items that CSS3 makes TRIVIAL

  5. CSS3 Rounded Corners • Past approaches? • Example

  6. CSS3 Rounded Corners - Recap • Makes creating rounded divs a breeze • No Internet Explorer support but it degrades gracefully • Markup: .div2 { width:300px; height:300px; border: 3px solid #000; background:#cc0000; border-radius:30px; -moz-border-radius:30px; //Prefix to make this work in Firefox -webkit-border-radius:30px; //Prefix to make this work in webkitbrowsers }

  7. CSS3 Border Images • You can now specify an image to be used as part of the border property. • Example

  8. CSS3 Border Images - Recap • Format: border-image: source slice width outset repeat; • Markup: border-image: url(borderbg.jpg) 30 30 repeat; -webkit-border-image: url(borderbg.jpg) 30 30 repeat; -moz-border-image: url(borderbg.jpg) 30 30 repeat;

  9. CSS3 - Shadows • What do you do when you want to generate a shadow behind a layout element? • Example

  10. CSS3 Shadows - Recap • Once again no IE support • Format: box-shadow: h-shadow v-shadow blur spread color inset; • h-shadow == Position of horizontal shadow • V-shadow == Position of vertical shadow • Blur == Blur distance • Spread == Size of shadow • Color == Shadow Color • Inset == Make the shadow an inner (shadow)

  11. CSS3 Backgrounds • Page backgrounds in CSS2 • Example

  12. CSS3 Backgrounds • Format: background-size: length | percentage | cover | contain; • Sample Markup: background-size: 400px 500px; //width, height background-size:30% 40%; //width, height background-size:100%; //Omitting first value sets //the second to auto background-size:cover; background-size:contain;

  13. CSS3 Text Properties • Text Overflow • Word Break • Text Shadow

  14. Text Overflow • Supported in Internet Explorer (+ other browsers) • Example

  15. Text Overflow - Recap • Format: text-overflow: clip | ellipsis | string; • Also requires the whitespace:nowrap; & overflow:hidden properties to be set. • Sample Markup: #div1 { width:200px; overflow:hidden; white-space:nowrap; text-overflow:ellipsis; }

  16. Word Wrap • Force a line break even with a long word • Example • Format: word-wrap:break-word|normal;

  17. Text Shadow • Can be added outside the graphic • No IE support • Example • Format: text-shadow: h-shadowv-shadow blur color;

  18. Transformations • CSS3 supports 2D & 3D transformations • 2D transforms: Translate Rotate Scale Skew • 3D transforms: Not covered, limited support

  19. Transitions • Effects that let an element change from one style to another. • Limited Support – Currently only supported by Webkit based browsers (Chrome, Safari) • Example • Caveats: • You must specify the property you want to add an effect to. • You must specify a duration for the effect • Effect is typically applied on property change. • Format: transition: <property> <duration> -webkit-transition: <property> <duration> *You can specify multiple properties separated by commas

  20. Animations • Effects that let an element change from one style to another. • Limited Support – Currently only supported by Webkit based browsers (Chrome, Safari) • Example

  21. Nicely Formatted Columns • Putting content into columns is super easy • Again, No IE support • Example

  22. CSS3 Font Faces • Allows you to use non-standard fonts • Mixed support for otf, ttf, svg and eot • Example

  23. CSS3 Font Faces • Things to remember: • Internet Explorer only supports EOT • Mozilla browsers support OTF and TTF • Safari and Opera support OTF, TTF and SVG • Chrome supports TTF and SVG. • Format: @font-face { font-family:<makeupaname>; src:url(‘localfontname.ttf’) || url(‘http://fontlocation’); } • Recommended Read: http://paulirish.com/2009/bulletproof-font-face-implementation-syntax • Great resource: http://www.fontsquirrel.com/fontface

  24. Examples • CSS3 Accordion (No Jquery) • CSS Coke Can • CSS Animation

  25. http://www.findmebyip.com/litmus

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