fix: broken HTML (#1446)

* chore: refresh css files with sass 1.26.10

* fix: css selector for toolbar-separator

* chore: fix duplicate html ids in mac client faq

* fix: duplicate ID 'pagetitle' tags in Mac help

* fix: duplicate ID 'taskbox' tags in Mac help

* chore: fix mismatched div

macosx/TransmissionHelp/html/troubleshoot.html

@@ -16,13 +16,13 @@
 				<a class="leftborder" href="../html/Index2.html">Index</a></div>
 				</div>
 			</div>
-			<div id="pagetitle">
+			<div class="pagetitle">
 				<h1>I cannot get Transmission's port to open! </h1>
 			</div>
 			
 			<p>If your port is still not open, even after you have enabled automatic port forwarding, here are some tips you can use which may get it working.
 
-				<div summary="To do this" id="taskbox">
+				<div summary="To do this" class="taskbox">
 				<p>If you are still having problems, open the Message Log (in the Window menu) and post the debug output on the <a href="https://forum.transmissionbt.com/viewforum.php?f=4">support forums</a>.
 				<ol>
 					<li>Pause your torrents</li>
@@ -32,7 +32,7 @@
 				</ol>
 				</div>
 				
-			<div id="pagetitle">
+			<div class="pagetitle">
 				<h1>UPnP</h1>
 			</div>
 			<p>For UPnP compatible routers, make sure:
@@ -42,12 +42,12 @@
 				<li>The port has not already been forwarded manually.
 			</ul>
 			
-			<div id="pagetitle">
+			<div class="pagetitle">
 				<h1>AirPort</h1>
 			</div>
 			<p>If you have an Apple AirPort, make sure NAT-PMP is enabled.
 				
-					<div summary="To do this" id="taskbox">
+					<div summary="To do this" class="taskbox">
 					<ol>
 						<li>Open AirPort Utility (located in /Applications/Utilities)</li>
 						<li>Select your base station, and then choose Manual Setup from the Base Station menu. Enter the base station password if necessary.</li>
@@ -59,7 +59,7 @@
 			</div>
 
 		</div>
-					<div id="pagetitle">
+					<div class="pagetitle">
 						<h1>Double NAT</h1>
 					</div>
 					<p>Another possible reason your port remains closed could be because your router is not the only device on the network which needs to be configured.