User:Michel W/Self-learning

⭑HTML⭑

My⭑Github⊹⊹⊹

⊹Well chosen content of H1 element is crucial to SEO.

Html Entities

• Help avoid rendering issues
• Safeguard against more limited character encoding
• Provide characters not available on a keyboard

Instead of	<	>	&
Use:	&lt ;	&gt ;	&amp ;

Use nbsp; HTML document ALWAYS appear together on 1 line

After the 1st word and after the 2nd word (with no spaces in between words and entity references)

⊹Option + Command + I --- Google Chrome

⭑CSS⭑

⊹Syntax simple CSS selectors

• Element
• class (define with .)
• id (define with #)

⊹Combining Selectors:

• Element with class selectors (selector.class)
• Child (direct) selector (selector > selector)
• Descendant selector (selector selector)

-Didn't cover:

• Adjacent sibling selector (selector + selector)
• General sibling selector (selector ~ selector)

⊹Pseudo-Class Selector

• : link
• : visited
• : hover
• : active
• : nth-child

<link ref="stylesheet" href="style.css">

⊹Conflict Resolution

• Origin precedence: Last declaration wins
• Inheritance: DOM Tree
• Specificity: Most specific selector combination wins

(Score) 1. Style="..." 2. ID 3. Class, pseudo-class, attribute 4. # of Elements

⊹Styling Text

.style {
  font-family: Arial, Helvetica, sans-serif;
  color: #0000ff;
  font-style: italic;
  font-weight: bold;
  font-size: 24px;
  text-transform: uppercase;
  text-align: center;
}

CSS Fonts

Set Font Size With Em:

To allow users to resize the text (in the browser menu), many developers use em instead of pixels.

1em is equal to the current font size. The default text size in browsers is 16px. So, the default size of 1em is 16px.

The size can be calculated from pixels to em using this formula: pixels/16=em