Edit in JSFiddle

HTML defined table:
<table cellSpacing="0" cellPadding="0" width="100%" border="1">
    <tr>
        <td align="left">1</td>
        <td align="left">2</td>
    </tr>
    <tr>
        <td align="left">3</td>
        <td align="left">4</td>
    </tr>
</table>
<br/>
CSS defined table:
<table class="myTable"  width="100%" >
    <tr>
        <td >1</td>
        <td >2</td>
    </tr>
    <tr>
        <td >3</td>
        <td >4</td>
    </tr>
</table>





<!-- Post Info -->
<div style='position:fixed;bottom:0;left:0;    
            background:lightgray;width:100%;'>
    Find documentation: <a href='http://www.w3schools.com/cssref/pr_border-collapse.asp'>CSS border-collapse</a><br/>
    Find documentation: <a href='http://www.w3schools.com/css/css_padding.asp'>CSS Padding</a><br/>
    Find documentation: <a href='http://www.w3schools.com/cssref/pr_border.asp'>CSS border</a><br/>
    Find documentation: <a href='http://www.w3schools.com/cssref/pr_text_text-align.asp'>CSS text-align</a><br/>
<div>

table.myTable {
	padding:0; /*replaces table attribute cellpadding */
    border-collapse: collapse; /*replaces table attribute cellspacing*/
    border-style: solid; /*replaces table attribute border */
    border-width: 1px;
    border-color: black;
    
}
/* for any td in the myTable class */
table.myTable td {
    text-align:left; /*replaces td attribute align */
    border: 1px solid grey;
}