Styling HTML Table output from MySQL Query Results

I am attempting to create a report that will output the transactions for all clients in my database. I'm having a hard time getting the layout right, though. I need a space between the last row of the data table and the next client table header row.

I haven't started styling this yet, so please be kind - it's terribly ugly. If you have any suggestions on that front, please include them!

Here's what I have now:

And here's my code:

<?php
include('config.php');
$account = ''; // Declare Account to Empty

$sql = "SELECT * from client, billing WHERE client.id = billing.client ORDER BY client.id DESC";
$result = mysql_query($sql) or die(mysql_error());

// Keeps getting the next row until there are no more to get
while($row = mysql_fetch_array($result)){
   if ($row['account'] != $account) { // check if new account
        $account = $row['account'];
        if ($cnt > 0) echo '</tr>'; // check if open table row
        $cnt = 0; // set $cnt to zero and echo table row for new account
        echo "<table border='1' width='800px' align='center'><th>Client ID</th><th>First Name</th><th>Last Name</th><th>Case Style</th><th>Accident Date</th><th>SOL Expires</th>";
        echo "<tr><td>";
        echo $row['account'];
        echo "</td><td>";
        echo $row['fname'];
        echo "</td><td>";
        echo $row['lname'];
        echo "</td><td>";
        echo $row['casestyle'];
        echo "</td><td>";
        echo $row['accidentdate'];
        echo "</td><td>";
        echo $row['solexpires'];
        echo "</td></tr></table>";
        echo "<br /><table border='1' width='800px' align='center'>";
        echo "<tr><th>Date</th><th>Client ID</th><th>Transaction Type</th><th>Charge</th><th>Billed From</th><th>Payment</th></tr>";
        }
        if ($cnt == 0) echo '<tr>';
        // Print out the contents of each row into a table
        echo "<td>";
        echo $row['date'];
        echo "</td><td>";
        echo $row['account'];
        echo "</td><td>";
        echo $row['job_type'];
        echo "</td><td>";
        echo $row['charge'];
        echo "</td><td>";
        echo $row['job_type'];
        echo "</td><td>";
        echo $row['payment'];
        echo "</td></tr>";
        $cnt++;
}

echo "</table>";
?>

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Thanks in advance for your help.