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04 CSS #burningkeyboards
- 2. CSS 2
- 3. CSS ‣ Cascading Style Sheets is a simple design language intended to simplify the process of making web pages presentable. ‣ CSS handles the look and feel part of a web page. ‣ Using CSS, you can control the color of the text, the style of fonts, the spacing between paragraphs, how columns are sized and laid out, what background images or colors are used, layout designs, variations in display for different devices and screen sizes as well as a variety of other effects. 3 INTRO
- 4. CSS ‣ CSS saves time − You can write CSS once and then reuse same sheet in multiple HTML pages. You can define a style for each HTML element and apply it to as many Web pages as you want. ‣ Pages load faster − If you are using CSS, you do not need to write HTML tag attributes every time. Just write one CSS rule of a tag and apply it to all the occurrences of that tag. So less code means faster download times. ‣ Easy maintenance − To make a global change, simply change the style, and all elements in all the web pages will be updated automatically. ‣ Superior styles to HTML − CSS has a much wider array of attributes than HTML, so you can give a far better look to your HTML page in comparison to HTML attributes. ‣ Multiple Device Compatibility − Style sheets allow content to be optimized for more than one type of device. By using the same HTML document, different versions of a website can be presented for handheld devices such as PDAs and cell phones or for printing. ‣ Global web standards − Now HTML attributes are being deprecated and it is being recommended to use CSS. So it's a good idea to start using CSS in all the HTML pages to make them compatible to future browsers. ‣ Offline Browsing − CSS can store web applications locally with the help of an offline cache. Using of this, we can view offline websites.The cache also ensures faster loading and better overall performance of the website. ‣ Platform Independence − The Script offer consistent platform independence and can support latest browsers as well. 4 ADVANTAGES OF CSS
- 5. CSS selectorlist { property: value; [more property: value; pairs] } ...where selectorlist is: selector[:pseudo-class] [::pseudo-element] [, more selectorlists] 5 STYLE RULES
- 6. CSS ‣ Type selectors elementname ‣ Class selectors .classname ‣ ID selectors #idname ‣ Universal selectors * ns|* *|* ‣ Attribute selectors [attr=value] ‣ Combined selectors .clasname.clasname | .classname[attrt=value] 6 BASIC SELECTORS
- 7. CSS ‣ Adjacent sibling selectors A + B ‣ General sibling selectors A ~ B ‣ Child selectors A > B ‣ Descendant selectors A B 7 COMBINATORS
- 8. CSS ‣ ::after ‣ ::before ‣ ::first-letter ‣ ::first-line ‣ ::selection 8 PSEUDO-ELEMENTS
- 9. CSS ‣ :active ‣ :any ‣ :checked ‣ :default ‣ :dir() ‣ :disabled ‣ :empty ‣ :enabled ‣ :first ‣ :first-child ‣ :first-of-type ‣ :fullscreen ‣ :focus ‣ :hover ‣ :indeterminate ‣ :in-range ‣ :invalid ‣ :lang() ‣ :last-child ‣ :last-of-type 9 PSEUDO-CLASSES ‣ :left ‣ :link ‣ :not() ‣ :nth-child() ‣ :nth-last-child() ‣ :nth-last-of-type() ‣ :nth-of-type() ‣ :only-child ‣ :only-of-type ‣ :optional ‣ :out-of-range ‣ :read-only ‣ :read-write ‣ :required ‣ :right ‣ :root ‣ :scope ‣ :target ‣ :valid ‣ :visited
- 10. CSS 10 EXAMPLE <!DOCTYPE html> <html> <head> <title>This is a title</title> <!-- CSS media query on a link element --> <link rel="stylesheet" href="example.css" /> <!-- CSS media query within a stylesheet --> <style> body { font-size: 13px; } #title { color: #FF0000; background: white; font-size: 2em; } .test { margin: 10px; } </style> </head> <body> <!-- This is a paragraph --> <p id="title">Hello world!</p> <p class="test">Hello world it's me!</p> <!-- This is a link --> <a href="http://www.perpetuum.hr/burning-keyboards-2017">#burningkeyboards</a> <!-- This is a image --> <img src="http://www.perpetuum.hr/themes/perpetuum_bootstrap_subtheme/img/logo.png"> </body> </html>
- 11. CSS 11 CSS3 MEDIA QUERIES <!-- CSS media query on a link element --> <link rel="stylesheet" media="(max-width: 800px)" href="example.css" /> <!-- CSS media query within a stylesheet --> <style> @media (max-width: 600px) { .facet_sidebar { display: none; } } @media (min-width: 700px) and (orientation: landscape) { ... } </style>
- 12. TEXT CSS REFERENCES ‣ Specification ‣ https://www.w3.org/standards/techs/css#w3c_all ‣ Mozilla Developer Network ‣ https://developer.mozilla.org/en-US/docs/Web/CSS ‣ Bootstrap: ‣ http://getbootstrap.com/ ‣ CSS Validator: ‣ https://jigsaw.w3.org/css-validator/ ‣ HTML & CSS PlayGround: ‣ https://codepen.io/