To define a table we need to use three main tags: <table>, <tr> and <td>. 
<table> defines the limits of a table, within it you can also specify some table 
characteristics that we will discuss later. <tr> defines each table row. <td> defines 
the data within the table rows. Each table row can have several <td>. Lets see an example:
<table>
<tr>
<td>Canada</td>
<td>Ontario</td>
</tr>
<tr>
<td>USA</td>
<td>Washington</td>
</tr>
<tr>
<td>England</td>
<td>London</td>
</tr>
</table> 
 
The result is:
 
Canada Ontario 
USA Washington
England London
 
 
<table> attributes:
<table> tag has many properties, here we are going to discuss the main ones.
The border attribute lets you define the width of the table border. 
To add a border to the above table we will have to modify the table tag this way
 
<table border=2>
 
The table below shows the result
 
Canada
Ontario
USA
Washington
England
London
 
The bgcolor attribute let us modify the background color.  For example:
 
<table border=2 bgcolor="yellow">
 
Will result in 
 
Canada
Ontario
USA
Washington
England
London
 
Use width attribute to change the width of the table
 
<table border=2 bgcolor="yellow" width=100%>
 
Canada
Ontario
USA
Washington
England
London
 
Another example will be
 
<table border=2 bgcolor="yellow" width=30%>
 
Canada
Ontario
USA
Washington
England
London
 
 
Cellpadding will modify the space between the text and the cell border
 
<table border=2 bgcolor="yellow" cellpadding=10>
 
Canada
Ontario
USA
Washington
England
London
 
The table below shows a complete list of <table> attributes:
Attribute
Description
Border
Size of table border
Cellpadding
Space between cell text and its border
Cellspacing
Space between cells
Width
Width of the table
Bgcolor
Background color of the table
Background
Background image of the table
Align
Alignment of table (left, center, right)
hspace
Horizontal space between table and text
vspace
Vertical space between table and text
Height
Height of the table
Frame
Parts in the outside border that are available 
rules
sets if there will be internal borders or not
Bordercolor
color of the border
Bordercolorlight
color of the "light" part of the table border
Bordercolordark
color of the "dark" part of the table border 
summary
A summary of the table