Seven wonders: Chichen Itza

The layout of Chichen Itza site core developed during its earlier phase of occupation, between 750 and 900 AD.Its final layout was developed after 900 AD, and the 10th century saw the rise of the city as a regional capital controlling the area from central Yucatán to the north coast, with its power extending down the east and west coasts of the peninsula.The earliest hieroglyphic date discovered at Chichen Itza is equivalent to 832 AD, while the last known date was recorded in the Osario temple in 998.

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HTML Color Values


Colors are displayed combining RED, GREEN, and BLUE light.
HTML Colors

Colors in HTML can be specified by the following methods:

    Hexadecimal colors
    RGB colors
    Color names

Hexadecimal Colors

Hexadecimal color values are supported in all major browsers.

A hexadecimal color is specified with: #RRGGBB, where the RR (red), GG (green) and BB (blue) hexadecimal integers specify the components of the color. All values must be between 00 and FF.

For example, the #0000FF value is rendered as blue, because the blue component is set to its highest value (FF) and the others are set to the lowest value (00).
RGB Colors

RGB color values are supported in all major browsers.

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HTML Color Names

Color Names Supported by All Browsers

All modern browsers support the following 140 color names (click on a color name, or a hex value, to view the color as the background-color along with different text colors):

Click here to see the 140 colors sorted by HEX
Color Name     HEX     Color     Shades     Mix

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HTML Iframes


An iframe is used to display a web page within a web page.

Iframe Syntax

The syntax for adding an iframe is:
<iframe src="URL"></iframe>

The src attribute specifies the URL (web address) of the iframe page.
Iframe - Set Height and Width

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HTML Responsive Web Design


    RWD stands for Responsive Web Design
    RWD can deliver web pages in variable sizes
    RWD is a must for tablets and mobile devices

Creating Your Own Responsive Design

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HTML Layouts


Websites often display content in multiple columns (like a magazine or newspaper).
City Gallery
London
Paris
Tokyo
London

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HTML Classes

Classing Block Elements

The HTML class attribute makes it possible to define equal styles for "equal" <div> elements:
London

London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.

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HTML Block and Inline Elements


Every HTML element has a default display value depending on what type of element it is. The default display value for most elements is block or inline.
Block-level Elements

Bangabandhu Sheikh Mujib

Bangabandhu Sheikh Mujibur Rahman
Born, March 17, 1920 ; Died: August 15, 1975

Sheikh Mujibur Rahman was a preeminent Bengali national leader of Bangladesh. He headed the Awami League and was the first President of Bangladesh during the Bangladesh liberation War, and later became Prime Minister  in independent Bangladesh. He is popularly referred to as with the honorary title of  Bangabandhu.

মানুষ মানুষের জন্য

আমি অবাক
আসুন একটু ভেবে দেখি

বাংলাদেশ পোস্টাল ই ডি কর্মচারী ইউনিয়নের  মানবেতর জীবনযাপন                  

পদবী                                            কর্মচারীর সংখ্যা        বর্তমান প্রদত্ত ভাতা
ই ডি সাব-পোস্ট মাস্টার                             ৩২২ জন                    ৳ ১৬৫০/-   
ই ডি এ (ব্রাঞ্চ পোস্ট মাস্টার)                      ৮১৩৮ জন                    ৳ ১২৬০/-       
ই ডি ডি এ ( চিঠি বিলিকারী)                      ৭২৫৩ জন                    ৳ ১২৩০/-   
ই ডি এম সি ( ডাক বহনকারী)                     ৫৯৬১ জন                    ৳ ১১৮০/-       
অন্যান্য ই ডি কর্মচারী (চৌকিদার,ঝাড়ু দার)         ১৩৪৭ জন                     ৳১১৩০/-   
                                            মোট= ২৩০২১ জন

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HTML Lists

Unordered lists and ordered lists are commonly used in HTML:

Unordered List

• The first item
• The second item
• The third item
• The fourth item

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HTML Tables

---

HTML Table Example

Number	First Name	Last Name	Points
1	Eve	Jackson	94
2	John	Doe	80
3	Adam	Johnson	67
4	Jill	Smith	50

---

Defining HTML Tables

Example

<table style="width:100%">
  <tr>
    <td>Jill</td>
    <td>Smith</td>
    <td>50</td>
  </tr>
  <tr>
    <td>Eve</td>
    <td>Jackson</td>
    <td>94</td>
  </tr>
</table>

Example explained:
Tables are defined with the <table> tag.
Tables are divided into table rows with the <tr> tag.
Table rows are divided into table data with the <td> tag.
A table row can also be divided into table headings with the <th> tag.

	Table data <td> are the data containers of the table. They can contain all sorts of HTML elements like text, images, lists, other tables, etc.

---

An HTML Table with a Border Attribute

If you do not specify a border for the table, it will be displayed without borders.
A border can be added using the border attribute:

Example

<table border="1" style="width:100%">
  <tr>
    <td>Jill</td>
    <td>Smith</td>
    <td>50</td>
  </tr>
  <tr>
    <td>Eve</td>
    <td>Jackson</td>
    <td>94</td>
  </tr>
</table>

	The border attribute is on its way out of the HTML standard! It is better to use CSS.

To add borders, use the CSS border property:

Example

table, th, td {
    border: 1px solid black;
}

Remember to define borders for both the table and the table cells.

---

An HTML Table with Collapsed Borders

If you want the borders to collapse into one border, add CSS border-collapse:

Example

table, th, td {
    border: 1px solid black;
    border-collapse: collapse;
}

---

An HTML Table with Cell Padding

Cell padding specifies the space between the cell content and its borders.
If you do not specify a padding, the table cells will be displayed without padding.
To set the padding, use the CSS padding property:

Example

table, th, td {
    border: 1px solid black;
    border-collapse: collapse;
}
th, td {
    padding: 15px;
}

---

HTML Table Headings

Table headings are defined with the <th> tag.
By default, all major browsers display table headings as bold and centered:

Example

<table style="width:100%">
  <tr>
    <th>Firstname</th>
    <th>Lastname</th>
    <th>Points</th>
  </tr>
  <tr>
    <td>Eve</td>
    <td>Jackson</td>
    <td>94</td>
  </tr>
</table>

To left-align the table headings, use the CSS text-align property:

Example

th {
    text-align: left;
}

---

An HTML Table with Border Spacing

Border spacing specifies the space between the cells.
To set the border spacing for a table, use the CSS border-spacing property:

Example

table {
    border-spacing: 5px;
}

	If the table has collapsed borders, border-spacing has no effect.

---

Table Cells that Span Many Columns

To make a cell span more than one column, use the colspan attribute:

Example

<table style="width:100%">
  <tr>
    <th>Name</th>
    <th colspan="2">Telephone</th>
  </tr>
  <tr>
    <td>Bill Gates</td>
    <td>555 77 854</td>
    <td>555 77 855</td>
  </tr>
</table>

---

Table Cells that Span Many Rows

To make a cell span more than one row, use the rowspan attribute:

Example

<table style="width:100%">
  <tr>
    <th>Name:</th>
    <td>Bill Gates</td>
  </tr>
  <tr>
    <th rowspan="2">Telephone:</th>
    <td>555 77 854</td>
  </tr>
  <tr>
    <td>555 77 855</td>
  </tr>
</table>

---

An HTML Table With a Caption

To add a caption to a table, use the <caption> tag:

Example

<table style="width:100%">
  <caption>Monthly savings</caption>
  <tr>
    <th>Month</th>
    <th>Savings</th>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
  </tr>
  <tr>
    <td>February</td>
    <td>$50</td>
  </tr>
</table>

	The <caption> tag must be inserted immediately after the <table> tag.

---

A Special Style for One Table

To define a special style for a special table, add an id attribute to the table:

Example

<table id="t01">
  <tr>
    <th>Firstname</th>
    <th>Lastname</th>
    <th>Points</th>
  </tr>
  <tr>
    <td>Eve</td>
    <td>Jackson</td>
    <td>94</td>
  </tr>
</table>

Now you can define a special style for this table:

table#t01 {
    width: 100%;
    background-color: #f1f1c1;
}

And add more styles:

table#t01 tr:nth-child(even) {
    background-color: #eee;
}
table#t01 tr:nth-child(odd) {
    background-color: #fff;
}
table#t01 th {
    color: white;
    background-color: black;
}

---

Chapter Summary

• Use the HTML <table> element to define a table
• Use the HTML <tr> element to define a table row
• Use the HTML <td> element to define a table data
• Use the HTML <th> element to define a table heading
• Use the HTML <caption> element to define a table caption
• Use the CSS border property to define a border
• Use the CSS border-collapse property to collapse cell borders
• Use the CSS padding property to add padding to cells
• Use the CSS text-align property to align cell text
• Use the CSS border-spacing property to set the spacing between cells
• Use the colspan attribute to make a cell span many columns
• Use the rowspan attribute to make a cell span many rows
• Use the id attribute to uniquely define one table

---

HTML Table Tags

Tag	Description
<table>	Defines a table
<th>	Defines a header cell in a table
<tr>	Defines a row in a table
<td>	Defines a cell in a table
<caption>	Defines a table caption
<colgroup>	Specifies a group of one or more columns in a table for formatting
<col>	Specifies column properties for each column within a <colgroup> element
<thead>	Groups the header content in a table
<tbody>	Groups the body content in a table
<tfoot>	Groups the footer content in a table

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