![Advanced Selectors Child Selectors: div>em {color:red;} Universal Selector: * {color:red;} Adjacent Sibling: h1+h3 {color:red;} Attribute Selectors: a[href=""],img[alt] {color:red;}](https://image.slidesharecdn.com/cssfundamentals-120210092206-phpapp01/85/CSS-Fundamentals-13-320.jpg)
CSS Fundamentals
- 2. What is CSS? Cascading Style Sheets Rules that define how HTML elements should look body {background:black;} Cascades part determines the order the rules are applied in
- 3. Types of Style Sheets Browser -Applies some styles by default User -Some browsers allow you to create your own styles. Author -Websites can also have style sheets...these are the ones you'll be doing.
- 4. selectors select elements to be styled declaration tells browser how to style property is what you want to modify value is the option you want for the property What does it look like? <style> em { color:red; font-weight:bold; } </style> declaration selector property value
- 5. Where does CSS go Inline style="" attribute - Only good for one tag Embedded <style> - Good for the whole page External <link rel="stylesheet" href="" /> - Many Pages
- 6. When you need to share code Only affects a specific tag Inline <em style="color:red;">dog</em>
- 7. Uses the <style> tag Affects the current page Uses selectors to specify which tags to affect Embedded <style> em { color: green; font-size:18px;} </style>
- 8. Can affect a multitude of documents Uses a separate file that must be linked to The CSS file does NOT need <STYLE> tag External <link rel="stylesheet" type="text/css" href="my.css" />
- 9. HTML Color Modes Can use Color Names like Black, Red, Blue Can use Red, Green and Blue values from Photoshop To be more specific, use Hexadecimal codes #FFCC00 Can be shortened to three letters if they're the same #FC0 Newer browsers can use rgba(0,0,0,0.5);
- 10. Children inherit styles from parent BODY is the big daddy Inheritance body { font-family:verdana; } p { font-size:10px;}
- 11. SPECIFICITY Which rules take over when there's more than one Browsers always deal with multiple style sheets Browser/User/Author style sheet/External/embedded/inline If two rules conflict, generally the later rule wins <style>em { color: red; }</style> <p>The quick <em style="color:green;">fox</em>.</p>
- 12. Common Selectors Type Selectors: em {color: blue; } Class Selectors: .wrapper {background-color: #CFC;} ID Selectors: #content {width:960px;} Descendant Selectors: p em {color:red;}
- 13. Advanced Selectors Child Selectors: div>em {color:red;} Universal Selector: * {color:red;} Adjacent Sibling: h1+h3 {color:red;} Attribute Selectors: a[href=""],img[alt] {color:red;}
- 14. Clean HTML is Crucial DOM (Document Object Model) The Order of Things
- 15. Pseudo Elements Pseudo Classes: :hover,:first-child Pseudo Elements: :first-line, :first-letter Insertion Elements: :before, :after
- 16. Multiple Class Selectors You can combine multiple classes by separating them by spaces "wrapper mod"
- 17. Class Shortcuts Font Background Border
- 18. The generic Tags Span-Inline DIV-Block Level
- 19. The Box Model Inline vs Block Margin Border Padding
- 20. Floating To the Right or to the Left The container problem Fixing it with the mod class in html5reset
- 21. Positioning Static-Normal positioning of objects Fixed-Fixed to the browser window Relative-Relative to it's current position, but can be moved Absolute-Relative to the last relatively positioned object, if one is not present, then works like Fixed...relative to the window. Z-index
- 22. The End
Editor's Notes
- #9: The link tag establishes relationships between the current document and other documents. It is almost always used to specify external style sheets. The rel attribute defines the type of relationship. The type attribute specifies the MIME type (the format of the text file) and the href attribute, the location of the file.
- #11: DOM (Document Object Model)