simplethemes

Probably stating the obvious here, but did you check to make sure the Gallery page template is selected in the edit panel of the online page entry?

You may want to try this:
wp_list_categories
wp_list_categories('title_li=<h2>' . __('Categories') . '</h2>' );

You can also achieve this in your register_sidebars function using before_title and after_title.

The problem is your content shifts under the header/navigation area when the browser window is resized. Any layout gets complicated whenever you mix a fluid header with fixed width content area. I would either wrap the header in the fixed/center container or switch everything to a full fluid layout.
https://www.designinfluences.com/fluid960gs/

I guess I didn’t look everywhere. Found the solution right after I posted. Finding if <!–nextpage–> exists. I ended up using $page to get the current page number.
https://codex.www.ads-software.com/Function_Reference/get_the_content

The theme author probably chose 950px so that it will display without a scrollbar in 1024×768 browser resolutions. You could safely add 10px more to make it 960px. I wouldn’t go much wider than 960.

To do this, edit this file:
https://[yourDomain]/wp-content/themes/ProSense/style.css

Find both instances of
width: 950px;
and replace with
width: 960px;
then find:
#sidebar .sidebar_right
and change its width property to 250px.
This will add the 10px to your sidebar.

You’ll need to add the extra 10px to the sidebar container here too.

#sidebar {
float:right;
margin-left:0;
padding-top:20px;
width:420px;
}

(changed from 410px to 420px)

Lastly, you’ll need to edit the header image:
https://[yourDomain]/wp-content/themes/ProSense/images/header.gif

to be 960px wide..

Hope this helps.

Try using this instead

#pagetitle h1,#pagetitle h4 {display :none;}

I believe I’ve found a solution to this but I’m curious if there is any performance issues for including header.php vs. using the get_header() function?

<?php
$wrapperstyle = "right";
include(TEMPLATEPATH . '/header.php');
?>