diff --git a/nljug.html b/nljug.html
index 9caf228..44fb345 100644
--- a/nljug.html
+++ b/nljug.html
@@ -1,125 +1,93 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
-  <head>   
+  <head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>SimpleWebConf 2021 Conference</title>
     <style type="text/css">
       /* Default CSS */
-      body,#body_style {margin: 0; padding: 0; background: #ffffff; font-size: 14px; color: #313a42;}
-      a {color: #09c;}
-      a img {border: none; text-decoration: none;}
-      table, table td {border-collapse: collapse;}
-      td, h1, h2, h3 {font-family: arial, sans-serif; color: #313a42;}
-      h1, h2, h3, h4 {color: #313a42 !important; font-weight: normal; line-height: 1.2;}
-      h1 {font-size: 24px;}
-      h2 {font-size: 18px;}
-      h3 {font-size: 16px;}
-      p {margin: 0 0 1.6em 0;}
-      
-      /* Top header */
-      .topHeader {background: #fab4b7;}
-      
-      /* Logo (branding) */
-      .logoContainer {padding: 20px 0px; width: 320px;}
-      .logoContainer a {color: #ffffff;}
-      
-      /* Webversion */
-      .webversion {width: 200px; text-align: right;}
-      .webversion a {display: block;}
-      .webversion,.webversion a {color: #ffffff; font-size: 10px; text-decoration: underline;}
-      
-      /* Whitespace */
-      .whitespace {font-family: 0px; line-height: 0px;}
-      
-      /* Big header image */
-      .bigHeader img{display: block;}
-      
-      /* Button */
-      .button {padding: 10px 10px 10px 10px; background-color: #50bdc3; text-align: center;}
-      .button a {color: #ffffff; text-decoration: none;}
-      
-      .introTitle,.sectionArticleTitle {color: #f44336;}
-      
-      .introTitle {font-size: 18px; line-height: 1.2; text-align: center; padding: 20px 0px 5px 0px;}
-      .introContent {text-align: center; padding: 0px 0px 20px 0px;}
-      
-      /* An article */
-      .sectionArticleContent {line-height: 20px; padding: 0px 0px 20px 0px;}
-      .sectionArticleTitle {font-size: 16px; padding: 0 0 10px 0;}
-      .sectionArticleImage {padding: 0px 0px 20px 0px;}
-      .sectionArticleImage img {width: 50% !important; height: auto; -ms-interpolation-mode: bicubic; display: block;}
-      
-      /* Footer */
-      .footer {background-color: #E9F2F9;}
-      .footNotes a {color: #f44336;}
-      
-      /* CSS for specific screen width(s) */
-      @media only screen and (max-width: 480px) {
-        body,table,td,p,a,li,blockquote {-webkit-text-size-adjust:none !important;}
-          body[yahoofix] table {width: 100% !important;}
-          body[yahoofix] .bigHeader img {height: auto !important; max-width: 100% !important;}
-          body[yahoofix] .webversion {display: none; font-size: 0; max-height: 0; line-height: 0; mso-hide: all;}
-          body[yahoofix] .logoContainer {text-align: center;}
-          body[yahoofix] .sectionArticleTitle, body[yahoofix] .sectionArticleContent {text-align: center; padding:0 5px 10px 5px;}
-          body[yahoofix] .sectionPadding {padding: 0px 10px 0px 10px;}
-          body[yahoofix] .introTitle {padding: 20px 10px 5px 10px; !important}
-          body[yahoofix] .introContent {padding: 0px 10px 20px 10px !important;}
-        }
+            /* Big header image */
+            /* CSS for specific screen width(s) */
+            @media only screen and (max-width: 480px) {
+              body,table,td,p,a,li,blockquote {-webkit-text-size-adjust:none !important;}
+                body[yahoofix] table {width: 100% !important;}
+                body[yahoofix] .bigHeader img {height: auto !important; max-width: 100% !important;}
+                body[yahoofix] .webversion {display: none; font-size: 0; max-height: 0; line-height: 0; mso-hide: all;}
+                body[yahoofix] .logoContainer {text-align: center;}
+                body[yahoofix] .sectionArticleTitle, body[yahoofix] .sectionArticleContent {text-align: center; padding:0 5px 10px 5px;}
+                body[yahoofix] .sectionPadding {padding: 0px 10px 0px 10px;}
+                body[yahoofix] .introTitle {padding: 20px 10px 5px 10px; !important}
+                body[yahoofix] .introContent {padding: 0px 10px 20px 10px !important;}
+              }
     </style>
   </head>
-  <body style="background:#ffffff;" yahoofix>
-    <span id="body_style" style="display:block">
-      <table border="0" cellspacing="0" cellpadding="0" width="100%" summary="" class="topHeader">
+  <body style="margin:0;padding:0;background:#ffffff;font-size:14px;color:#313a42;background:#ffffff;" yahoofix>
+    <span id="body_style" style="margin:0;padding:0;background:#ffffff;font-size:14px;color:#313a42;display:block;">
+      <table border="0" cellspacing="0" cellpadding="0" width="100%" summary="" class="topHeader" style="border-collapse:collapse;background:#fab4b7;">
         <tr>
-          <td>
-            <table border="0" cellspacing="0" cellpadding="0" width="640" align="center" summary="">
+          <td style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;">
+            <table border="0" cellspacing="0" cellpadding="0" width="640" align="center" summary="" style="border-collapse:collapse;">
               <tr>
-                <td class="logoContainer">
-                  <a href="https://simplewebconf.com/" title="simplewebconf logo">
-                    <img class="logo" src="images/logo-white.png" width="32" alt="simplewebconf logo" />
+                <td class="logoContainer" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;padding:20px 0px;width:320px;">
+                  <a href="https://simplewebconf.com/" title="simplewebconf logo" style="color:#09c;color:#ffffff;">
+                    <img class="logo" src="images/logo-white.png" width="32" alt="simplewebconf logo" style="border:none;text-decoration:none;"/>
                   </a>
                 </td>
-                <td class="logoContainer">
-                  <a href="https://simplewebconf.com/" title="simplewebconf website">SimpleWebConf</a>
+                <td class="logoContainer" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;padding:20px 0px;width:320px;">
+                  <a href="https://simplewebconf.com/" title="simplewebconf website" style="color:#09c;color:#ffffff;">SimpleWebConf</a>
+                </td>
+                <td class="webversion" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;width:200px;text-align:right;color:#ffffff;font-size:10px;text-decoration:underline;">
+                  <a href="https://simplewebconf.com/nljug.html" title="View the webversion" style="color:#09c;display:block;color:#ffffff;font-size:10px;text-decoration:underline;">Webversion</a>
                 </td>
-              	<td class="webversion">
-                    <a href="https://simplewebconf.com/nljug.html" title="View the webversion">Webversion</a>
-              	</td>
               </tr>
             </table>
           </td>
         </tr>
       </table>
-      <table border="0" cellpadding="0" cellspacing="0" width="100%" summary="" class="bigHeaderBackground">
+      <table border="0" cellpadding="0" cellspacing="0" width="100%" summary="" class="bigHeaderBackground" style="border-collapse:collapse;">
         <tr>
-          <td>
-            <table border="0" cellpadding="0" cellspacing="0" width="640" align="center" summary="">
-              <tr><td class="bigHeader"><img src="images/simplewebconf-banner.png" width="640" alt="simplewebconf banner" /></td></tr>
+          <td style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;">
+            <table border="0" cellpadding="0" cellspacing="0" width="640" align="center" summary="" style="border-collapse:collapse;">
+              <tr>
+                <td class="bigHeader" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;">
+                  <img src="images/simplewebconf-banner.png" width="640" alt="simplewebconf banner" style="display:block;"/></td>
+              </tr>
             </table>
           </td>
         </tr>
       </table>
-      <table border="0" cellpadding="0" cellspacing="0" width="640" align="center" summary="">
-        <tr><td class="introTitle">Welcome to <b>SimpleWebConf 2021</b>, a conference celebrating web development made simple, from side project to enterprise!</td></tr>
-        <tr><td class="introContent"><b>SimpleWebConf</b> is a public online and free event to happen on <b>24-25 June 2021</b>, 16:00-21:00 CEST. During the event we will host regular and lightning talks with speakers from all over the world, as well as community activities. Before the conference, we will open with 2 days of free pre-conference workshops with limited space.
-        <b>Registration is free, so reserve your seat now!</b> The Call for Paper is also open until 15th May, so if you want to propose a session about Web Components, applications, or tools built on harmonic web solutions don't miss your chance!</td></tr>
-        <tr><td class="button"><a href="https://simplewebconf.com/" title="simplewebconf website">Register or Propose a Talk</a></td></tr>
-        <tr><td class="whitespace" height="20">&nbsp;</td></tr>
+      <table border="0" cellpadding="0" cellspacing="0" width="640" align="center" summary="" style="border-collapse:collapse;">
+        <tr>
+          <td class="introTitle" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;color:#f44336;font-size:18px;line-height:1.2;text-align:center;padding:20px 0px 5px 0px;">Welcome to <b>SimpleWebConf 2021</b>, a conference celebrating web development made simple, from side project to enterprise!</td>
+        </tr>
+        <tr>
+          <td class="introContent" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;text-align:center;padding:0px 0px 20px 0px;">
+            <b>SimpleWebConf</b> is a public online and free event to happen on <b>24-25 June 2021</b>, 16:00-21:00 CEST. During the event we will host regular and lightning talks with speakers from all over the world, as well as community activities. Before the conference, we will open with 2 days of free pre-conference workshops with limited space.
+        <b>Registration is free, so reserve your seat now!</b> The Call for Paper is also open until 15th May, so if you want to propose a session about Web Components, applications, or tools built on harmonic web solutions don't miss your chance!</td>
+        </tr>
+        <tr>
+          <td class="button" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;padding:10px 10px 10px 10px;background-color:#50bdc3;text-align:center;"><a href="https://simplewebconf.com/" title="simplewebconf website" style="color:#09c;color:#ffffff;text-decoration:none;">Register or Propose a Talk</a></td>
+        </tr>
+        <tr>
+          <td class="whitespace" height="20" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;font-family:0px;line-height:0px;">&nbsp;</td>
+        </tr>
       </table>
-      
-      <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center" summary="" class="footer">
-        <tr><td class="whitespace" height="10">&nbsp;</td></tr>
-        <tr><td class="footNotes" align="center">
-          <p style="text-align:center">Dit e-mailbericht is verstuurd naar {$profile.Emailadres}<br />
-            <a href="http://go.reshift.nl/NLJUG_Mailvoorkeur_wijzigen?profile={$profile.
-            id}&code={$profile.code}">Mailvoorkeur wijzigen</a><br />
+      <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center" summary="" class="footer" style="border-collapse:collapse;background-color:#E9F2F9;">
+        <tr>
+          <td class="whitespace" height="10" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;font-family:0px;line-height:0px;">&nbsp;</td>
+        </tr>
+        <tr>
+          <td class="footNotes" align="center" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;">
+            <p style="margin:0 0 1.6em 0;text-align:center;">Dit e-mailbericht is verstuurd naar {$profile.Emailadres}<br/>
+            <a href="http://go.reshift.nl/NLJUG_Mailvoorkeur_wijzigen?profile={$profile.%0D%0A%20%20%20%20%20%20%20%20%20%20%20%20id}&code={$profile.code}" style="color:#09c;color:#f44336;">Mailvoorkeur wijzigen</a><br/>
             U ontvangt deze e-mail uit hoofde van uw aanmelding bij een van de merken van Reshift
-            Digital BV.<br />Op alle uitingen is het <a title="Privacy statement Reshift Digital BV"
-            href="http://www.reshift.nl/privacy-statement">privacy statement</a> van Reshift Digital
+            Digital BV.<br/>Op alle uitingen is het <a title="Privacy statement Reshift Digital BV" href="http://www.reshift.nl/privacy-statement" style="color:#09c;color:#f44336;">privacy statement</a> van Reshift Digital
             BV van toepassing.</p>
-        </td></tr>
-        <tr><td class="whitespace" height="10">&nbsp;</td></tr>
+          </td>
+        </tr>
+        <tr>
+          <td class="whitespace" height="10" style="font-family:arial, sans-serif;color:#313a42;border-collapse:collapse;font-family:0px;line-height:0px;">&nbsp;</td>
+        </tr>
       </table>
     </span>
   </body>
