Refactor tutorial HTML files to enhance image presentation and update text for clarity and consistency across multiple pages.

Author: nikoscham

tutorials/HeatConduction1DWall.html

@@ -111,7 +111,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
     <p>
       Below is a demonstration of how to use the FEAScript library to solve this stationary heat transfer
       problem in your web browser. You only need a simple HTML page to run this example where the following
-      code snippets should be included. First, we should load the required external libraries:
+      code snippets should be included. First, load the required external libraries:
     </p>
     <pre class="prettyprint">
 &lt;head&gt;
@@ -165,7 +165,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
 
     });
   &lt;/script&gt;
-  &lt;!-- ...continue of body region... --&gt;
+  &lt;!-- ...rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
 
@@ -177,7 +177,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
 &lt;body&gt;
   &lt;!-- ...body region... --&gt;
   &lt;div id="resultsCanvas">&lt;/div&gt;
-  &lt;!-- ...continue of body region... --&gt;
+  &lt;!-- ...rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
     <p>

tutorials/HeatConduction2DFin.html

@@ -169,7 +169,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
 
     });
   &lt;/script&gt;
-  &lt;!-- ...continue of body region... --&gt;
+  &lt;!-- ...rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
     <p>
@@ -190,7 +190,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
 &lt;body&gt;
   &lt;!-- ...body region... --&gt;
   &lt;div id="resultsCanvas">&lt;/div&gt;
-  &lt;!-- ...continue of body region... --&gt;
+  &lt;!-- ...rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
     <p>

tutorials/HeatConduction2DFinGmsh.html

@@ -162,7 +162,7 @@ <h2 id="gmshfileimport"><a name="gmshfileimport"></a>Gmsh File Import</h2>
       );
     });
   &lt;/script&gt;
-  &lt;!-- ... continue of body region... --&gt;
+  &lt;!-- ... rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
 

tutorials/HeatConduction2DFinWorker.html

@@ -150,7 +150,7 @@ <h2 id="webworkerimplementation"><a name="Web Worker Implementation"></a>Web Wor
       model.terminate();
     });
   &lt;/script&gt;
-  &lt;!-- ...continue of body region... --&gt;
+  &lt;!-- ...rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
 

tutorials/SolidificationFront2D.html

@@ -95,11 +95,20 @@ <h2 id="mathematicalformulation"><a name="Mathematical formulation"></a>Mathemat
       equation and its mathematical properties, please see our
       <a href="https://blog.feascript.com/tutorial/2025/06/15/eikonal-equation.html">blog post</a>.
     </p>
-    <img
-      src="../assets/SolidificationFront2D.png"
-      width="300"
-      alt="Schematic of 2D solidification front domain"
-    />
+
+    <div class="center-image">
+      <img
+        src="../assets/SolidificationFront2D.png"
+        alt="Schematic of 2D solidification front domain"
+        width="300"
+      />
+      <p class="image-caption">
+        Schematic of the 2D solidification front propagation domain: constant value (0) at bottom, left, and
+        right edges indicating initial solidification fronts, and zero gradient at the top edge allowing free
+        propagation
+      </p>
+    </div>
+
     <p>
       The above schematic illustrates the problem domain and outlines the associated boundary conditions. In
       this model, we consider a square domain where solidification begins simultaneously from three sides
@@ -122,7 +131,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
     <p>
       Below is a demonstration of how to use the FEAScript library to solve this front propagation problem in
       your web browser. You only need a simple HTML page to run this example where the following code snippets
-      should be included. First, we should load the required external libraries:
+      should be included. First, load the required external libraries:
     </p>
     <pre class="prettyprint">
 &lt;head&gt;
@@ -181,7 +190,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
 
     });
   &lt;/script&gt;
-  &lt;!-- ...continue of body region... --&gt;
+  &lt;!-- ...rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
     <p>
@@ -192,7 +201,7 @@ <h2 id="solvingwithfeascript"><a name="Solving with FEAScript"></a>Solving with
 &lt;body&gt;
   &lt;!-- ...body region... --&gt;
   &lt;div id="resultsCanvas">&lt;/div&gt;
-  &lt;!-- ...continue of body region... --&gt;
+  &lt;!-- ...rest of body region... --&gt;
 &lt;/body&gt;</pre
     >
     <p>