Html Course

HTML Headings

HTML offers six levels of headings, using paired tags, from Heading 1 ( <h1> ... </h1>) to Heading 6 ( <h6> ... </h6>).
Each browser displays the headings in boldface, using its default font and descending font sizes, from Heading 1 (the biggest) to Heading 6 (the smallest).
- You can add CSS styles to change the Heading's font size, color, and other properties..

Use <h1>, <h2>, ..., for headings only.
Headings are important, search engines use document headings to index the structure and content of your web pages.

- Example:
<!DOCTYPE html>
<title>Example Headings</title>
<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
<h6>Heading 6</h6>

HTML Comments

Comments are used to insert notes into the document that are not displayed by the browser.
To add a comment, use the <!-- --> tag, placing the comment between the two pairs of dashes.

- Example:
<h4>Example HTML with Comments</h4>
<!-- This is a comment, Start Menu -->
 <li>Menu one</li>
 <li>Menu two</li>
<!-- End Menu -->
Comments can be any length and are not restricted to one line.
Although browsers don't display comments when they display the web page, they can be viewed in the source code of the web page.
- To view the source code for the page currently displayed in Google Chrome browser, right-click on the page, then click View Page Source (or Ctrl+U).
- To view the source code in Mozilla Firefox, click the View menu, and then click Page Source (or Ctrl+U).

Daily Test with Code Example

What attribute makes an option from <select> selected?
checked="checked" selected="selected" disabled="disabled"
<select name="a_name">
 <option value="val1">Option 1</option>
 <option value="val2" selected="selected">Option 2</option>
What CSS value allows to create color gradients for background?
contain repeat-x linear-gradient
#id {
  background: linear-gradient(top left, #1f1, #fff, #11f);
What statement creates an array in JavaScript?
[] {} new Object()
var arr = [1, "", ""];
Indicate the PHP function used to redirect to other page.
function() header() switch()
HTML Headings and Comments

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