HTML Paragraphs

Paragraphs are defined with the <p> ... </p> tag.
Paragraphs may contain text and inline elements. They are block elements, but they may not contain other block elements, including other paragraphs.
The length of the displayed text will be adjusted by the opening size of the browser.
Browsers automatically add an empty line before and after a paragraph, so, the distance between two successive paragraphs is of two lines.

  - Example:
HTML codeDisplays in browser
<html> 
<head>
<title>Document title</title>
</head>
<body>
<p>Paragraph 1</p>
<p>Paragraph 2</p>
<p>Paragraph 3</p>
<p>Paragraph 4</p>
</body>
</html>

Paragraph 1

Paragraph 2

Paragraph 3

Paragraph 4

Line Breaks

The <br /> tag inserts a line break in the content, it allows you to control where to add new line breaks, to force the beginning of a new line at a particular poinnt.

  - Example:
HTML codeDisplays in browser
<html> 
<head>
<title>Document title</title>
</head>
<body>
<h1>Heading 1</h1>
<p>Paragraph 1<br />
Line 2<br />
Line 3<br />
... </p>
<p>Paragraph 2</p>
</body>
</html>
Heading 1

Paragraph 1
Line 2
Line 3
...

Paragraph 2

- <br /> is an empty element, but may contain attribute (id, class, style).
Example:     <br id="idb" />

Horizontal rule

The <hr> (<hr /> for XHTML) tag creates a horizontal line in an HTML page.
The <hr> element can be used to divide a web page into different horizontal areas.
The <hr> tag is a block level element, and it uses the following attributes:
  - Example:
HTML codeDisplays in browser
<html> 
<head>
<title>Document title</title>
</head>
<body>
<h1>Heading 1</h1>
<p>Paragraph 1<br />
Line 2<br />
Line 3<br />
... </p>
<hr>
Some text ...
<hr color="#1111fe" size="4" width="50%">
<p>Paragraph 2</p>
</body>
</html>
Heading 1

Paragraph 1
Line 2
Line 3
...


Some text ...

Paragraph 2

- The preferred way of formatting a horizontal rule is by using CSS, adding an "id" or "class" attribute, or directly "style".
Example:     <hr style="width:50%; height:4px; color:#1111fe" />

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which attribute is used in <a> tag for the address of the link?
src href rel
<a href="http://coursesweb.net/" title="CoursesWeb.net">CoursesWeb.net</a>
Which CSS property sets the type of the text font?
font-family text-decoration font-size
h2 {
  font-family:"Calibri",sans-serif;
}
What instruction selects all the <div> tags with class="cls"?
querySelector("div.cls") getElementsByTagName("div") querySelectorAll("div.cls")
var elm_list = document.querySelectorAll("div.cls");
var nr_elms = elm_list.length;       // number of selected items
alert(nr_elms);
Indicate the function that can be used to get the sum of values in an array.
array_sum() array_diff() array_shift()
$arr = array(1, 2, 3, 4);
$arr_sum = array_sum($arr);
echo $arr_sum;       // 10
Paragraphs, Line break, Horizontal rule

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