table tr:nth-child(even)

<style>
table[border="1"]{
    border-collapse:collapse;
    font:normal 12px Verdana,Arial,Sans-Serif;
    color: #444;
}
table[border="1"] tr {
    background:#eee;
}
table[border="1"] th, table[border="1"] td {
    vertical-align:top;
    padding:4px 10px;
    border:1px solid #ddd;
}
table[border="1"] tr:nth-child(even) {
    background:#fff;
}
table[border="1"] th {
    color: #555;
    font-size: 14px;
        padding:10px 10px;
    text-align: center;
font-family:  sans-sarif;
}
</style>
<table border="1" width="600">
<tr>
<th>No</th>
<th>IP Address</th>
<th>Port</th>
<th>Country</th>
<th>Speed</th>
<th>Type</th>
<th>Anonimty</th>
<th>Last Check</th>
</tr>
<tr>
<td>1</td>
<td>213.736.913.193</td>
<td>8080</td>
<td>Rusia</td>
<td>560ms</td>
<td>HTTP</td>
<td></td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>213.736.913.193</td>
<td>8080</td>
<td>Rusia</td>
<td>560ms</td>
<td>HTTP</td>
<td></td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>213.736.913.193</td>
<td>8080</td>
<td>Rusia</td>
<td>560ms</td>
<td>HTTP</td>
<td></td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>213.736.913.193</td>
<td>8080</td>
<td>Rusia</td>
<td>560ms</td>
<td>HTTP</td>
<td></td>
<td></td>
</tr>
</table>