带有post查询的PHP/CSS按钮样式

我是PHP/CSS的新手。我已经编写了一个default.css按钮样式和一个php页面与许多处理按钮。按钮样式看起来很棒的按钮与url链接。参见下面的代码片段:

<form name="form" method="post">
<p class="button-style"><a href="importcsv.php">Import Sightings CSV</a></p>
&nbsp;&nbsp;
<p class="button-style"><a href="logbookentry.html">Enter New Sightings</a></p>
<br>
<p class="button-style"><a href="logbookentry.php">View Pre-logged Sightings</a></p>
<br>

然而，当我使用相同的按钮样式运行sql查询按钮，样式是不统一的。参见链接http://conchslist.com/ziktest/logprocess.php

<p class="button-style"><input type="submit" name="button5" value="Run Makes 1" /></p>
&nbsp;&nbsp;
<p class="button-style"><input type="submit" name="button6" value="Run Makes 2" /></p>
<br>
$q = mysql_query("UPDATE AVDMASTER p, SightingsEntrytmp pp 
SET pp.MAKE = '1' WHERE pp.UNIQUEID = p.UNIQUEID AND p.MAKE = '0';")or die(mysql_error());
if($q) {
echo "successful";
}else {
echo "error";
}
} //if isset
if(isset($_POST['button6'])) {
$q = mysql_query("UPDATE SightingsEntrytmp p, AVDMASTER pp
SET pp.MAKE = '1' WHERE pp.UNIQUEID = p.UNIQUEID AND p.MAKE = '1';")or die(mysql_error());
if($q) {
echo "successful";
}else {
echo "error";
}
} //if isset'

这可能真的很简单。但是，我如何调整代码，使按钮统一?

谢谢,斯蒂芬