Subhead size on a web page is inconsistent viewing on iMac vs iPhone
I am using Dreamweaver CS6 on a mid-2011 iMac. I designed and published a website http://wisconsin-auto-historians.org/index.html
When viewing the home page on my iMac the subhead in the body appears correct showing it as 18pt Ariel bold italic. When viewing the home page on my iPhone7 the subhead appears much smaller, 12 pt Ariel Bold italic. this happens on three of the website pages (About Us, Activities and Contact). On the Wisconsin Projects, Join and The Spark/Carhart pages the subhead appears as the correct size, 18pt Ariel bold italic. I have compared the code for all the pages for the subhead in there is no difference in the code other than the wording of the subhead.
My question is How do I fix this? Here are screen shots of the “About Us” page from the iMac and iPhone. 

As you can see the iPhone subhead is much smaller than the iMac subhead.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><!-- InstanceBegin template="/Templates/pages.dwt" codeOutsideHTMLIsLocked="false" -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<!-- InstanceBeginEditable name="doctitle" -->
<title>About the Wisconsin Society of Automotive Historians</title>
<meta name="keywords" content="Wisconsin, antique auto, Wisconsin historians,, old cars weekly, old cars, the Spark, Iola, Society of Automotive Historians,">
<meta name="description" content="The Wisconsin Society of Automotive Historians (WSAH), in addition to being a chapter of the Society of Automotive Historians, Inc. (SAH), is a non-profit organization affiliated with the Wisconsin Historical Society (WHS)...">
<!-- InstanceEndEditable -->
<!-- InstanceBeginEditable name="head" -->
<link href="styles/styles.css" rel="stylesheet" type="text/css" />
<style type="text/css">
a:visited {
color: #96F;
}
</style>
<!-- InstanceEndEditable -->
<style type="text/css">
body,td,th {
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
color: #633605;
}
body {
background-image: url(images/web-1-pg-bckgrnd-rule.png);
background-repeat: repeat-x;
margin-top: 0px;
background-color: #553f28;
}
</style>
<link href="styles/styles.css" rel="stylesheet" type="text/css" />
<style type="text/css">
a:visited {
color: #969;
}
a:link {
color: #960;
}
</style>
<!--[if lt IE 7.]>
<script defer type="text/javascript" src="pngfix.js"></script>
<![endif]-->
</head>
<body>
<table width="939" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="30" rowspan="5" valign="top"><img src="images/shadow-Left-side.png" width="30" height="508" alt="left-side-shadow" /></td>
<td width="235" bgcolor="#E8D9C9"><img src="images/web-1-row1-col1_165px.png" alt="Logo-top" width="235" height="165" border="0" /></td>
<td width="645" bgcolor="#E8D9C9"><img src="images/web-1-row1-col2-115pxh.png" width="645" height="115" alt="logo type banner" /><!-- InstanceBeginEditable name="links" --><span class="a-link-active">About Us</span><img src="images/transparent_gif.gif" width="10" height="10" alt="spacer" /><a href="mission.html">Our Mission</a><img src="images/transparent_gif.gif" width="10" height="10" alt="spacer" /><a href="activities.html">Activities</a><img src="images/transparent_gif.gif" width="10" height="10" alt="spacer" /><a href="projects.html">Wisconsin Projects</a><img src="images/transparent_gif.gif" width="10" height="10" alt="spacer" /><a href="join.html">Join</a><img src="images/transparent_gif.gif" width="10" height="10" alt="spacer" /><a href="links.html">Links</a><img src="images/transparent_gif.gif" width="10" height="10" alt="spacer" /><a href="contact.html">Contact</a><img src="images/transparent_gif.gif" width="10" height="10" alt="spacer" /><a href="spark_carhart.html">The Spark/Carhart</a><!-- InstanceEndEditable --></td>
<td width="30" rowspan="5" valign="top"><img src="images/shadow-right-side.png" width="30" height="508" alt="right-side-shadow" /></td>
</tr>
<tr>
<td width="235" bgcolor="#F2EADE"><img src="images/web-1-row3-col2.png" alt="logo-bottom" width="235" height="15" border="0" /></td>
<td width="645" bgcolor="#F2EADE"><img src="images/web-1-row3-col2.png" width="645" height="15" alt="row3-col2" /></td>
</tr>
<tr>
<td width="235" align="center" valign="top" background="images/web-1-body-bckgrnd.png"><!-- InstanceBeginEditable name="left-sidebar" -->
<p><img src="images/iola-2012-089.png" width="200" height="202" alt="WSAH Signage" /></p>
<p> Our booth signage.<br />
<img src="images/transparent_gif.gif" width="99" height="250" alt="spacer" /></p>
<!-- InstanceEndEditable --></td>
<td width="645" align="left" valign="top" background="images/web-1-body-bckgrnd.png" class="bodylinks"><!-- InstanceBeginEditable name="body" -->
<p class="subhead-text-18pt-light-brown">About Us</p>
<p class="bodylinks"><img src="images/Cert-of-affiliation-sticker.png" alt="Certificate of Affiliation" width="200" height="220" align="right" />The Wisconsin Society of Automotive Historians (WSAH), in addition to being a chapter of the <a href="http://autohistory.org" target="_blank">Society of Automotive Historians, Inc.</a> (SAH), is a non-profit organization affiliated with the <a href="http://wisconsinhistory.org" target="_blank">Wisconsin Historical Society</a> (WHS). </p>
<p class="bodylinks">The Wisconsin Historical Society is one of most active historical societies in the nation and was established in 1846, two years before Wisconsin became a state. </p>
<p class="bodylinks">WSAH meetings are held three times a year, with established sites for the official Annual Meeting at the<img src="images/kissel-emblem.png" alt="Kissel Mascot" width="98" height="100" align="right" /> <a href="https://www.iolaoldcarshow.com" target="_blank">Iola Car Show</a> in July, at the Hill and Valley car show and tour in Cross Plains in September and in April at The Wisconsin Automotive Museum in Hartford, home of the Kissel. Other activities are varied and scheduled as they come about.</p>
<p class="bodylinks"><img src="images/spark-ad.png" align="left" width="165" height="200" alt="The Spark ad" />A few words about our WSAH logo, created in 1979: The “Spark” steam vehicle, developed by Dr. J.W. Carhart of Racine in 1871, is thought to be the first automobile in Wisconsin and, some say, in the United States. The silhouette was drawn from an early photograph and is set within an outline of Wisconsin. </p>
<p class="bodylinks">Wisconsin Lore and Legends, a regular feature in some newspapers. This article is for the “Spark” circa 1877.</p>
<!-- InstanceEndEditable --></td>
</tr>
<tr>
<td bgcolor="#d9bf9c"><img src="images/transparent_gif.gif" width="200" height="10" alt="spacer" /><br /> <img src="images/bottom-rule-235w.png" width="235" height="6" alt="bottom rule 235" /></td>
<td bgcolor="#d9bf9c"><img src="images/transparent_gif.gif" width="600" height="10" alt="spacer" /><br /> <img src="images/bottom-rule-643w.png" width="643" height="6" alt="bottom rule 643" /></td>
</tr>
<tr>
<td width="235" bgcolor="#d9bf9c"><img src="images/transparent_gif.gif" width="10" height="20" alt="spacer" /></td>
<td width="645" bgcolor="#d9bf9c" class="copyright-12pt-brown">© 2020 Wisconsin Society of Automotive Historians, U.S.A. - All rights reserved. Website design – <a href="http://www.jazgraphics.com" target="blank" class="copyright-12pt-brown">JAZ Graphics</a><br />
<img src="images/transparent_gif.gif" width="100" height="6" alt="spacer" /> </td>
</tr>
</table>
<table width="880" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td><img src="images/WSAH.png" width="880" height="100" alt="WSAH Logotype" /></td>
</tr>
</table>
</body>
<!-- InstanceEnd --></html>Thank you for any help you may have. Jessica Z.
