diff --git a/website/guide/ctypes.html b/website/guide/ctypes.html
index fad1364c..ec2ea7cd 100644
--- a/website/guide/ctypes.html
+++ b/website/guide/ctypes.html
@@ -117,7 +117,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 <table>
 <tr>
 <th>Duktape type</th>
-<th>C99/C++11 32-bit int</th>
+<th class="highlight">C99/C++11 32-bit int</th>
 <th>Legacy 32-bit int</th>
 <th>Legacy 16-bit int</th>
 <th><code>printf</code></th>
@@ -126,7 +126,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_int_t</td>
-<td>int</td>
+<td class="highlight">int</td>
 <td>int</td>
 <td>long</td>
 <td>%ld<br />long</td>
@@ -135,7 +135,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_uint_t</td>
-<td>unsigned int</td>
+<td class="highlight">unsigned int</td>
 <td>unsigned int</td>
 <td>unsigned long</td>
 <td>%lu<br />unsigned long</td>
@@ -144,7 +144,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_int32_t</td>
-<td>int32_t</td>
+<td class="highlight">int32_t</td>
 <td>int</td>
 <td>long</td>
 <td>%ld<br />long</td>
@@ -153,7 +153,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_uint32_t</td>
-<td>uint32_t</td>
+<td class="highlight">uint32_t</td>
 <td>unsigned int</td>
 <td>unsigned long</td>
 <td>%lu<br />unsigned long</td>
@@ -162,7 +162,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_uint16_t</td>
-<td>uint16_t</td>
+<td class="highlight">uint16_t</td>
 <td>unsigned short</td>
 <td>unsigned short</td>
 <td>%u<br />unsigned int</td>
@@ -171,7 +171,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_idx_t</td>
-<td>int</td>
+<td class="highlight">int</td>
 <td>int</td>
 <td>long</td>
 <td>%ld<br />long</td>
@@ -180,7 +180,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_uarridx_t</td>
-<td>unsigned int</td>
+<td class="highlight">unsigned int</td>
 <td>unsigned int</td>
 <td>unsigned long</td>
 <td>%lu<br />unsigned long</td>
@@ -189,7 +189,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_codepoint_t</td>
-<td>int</td>
+<td class="highlight">int</td>
 <td>int</td>
 <td>long</td>
 <td>%ld<br />long</td>
@@ -198,7 +198,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_errcode_t</td>
-<td>int</td>
+<td class="highlight">int</td>
 <td>int</td>
 <td>long</td>
 <td>%ld<br />long</td>
@@ -207,7 +207,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_bool_t</td>
-<td>int</td>
+<td class="highlight">int</td>
 <td>int</td>
 <td>int</td>
 <td>%d<br />int</td>
@@ -216,7 +216,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_ret_t</td>
-<td>int</td>
+<td class="highlight">int</td>
 <td>int</td>
 <td>int</td>
 <td>%d<br />int</td>
@@ -225,7 +225,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_size_t</td>
-<td>size_t</td>
+<td class="highlight">size_t</td>
 <td>size_t</td>
 <td>size_t</td>
 <td>%lu<br />unsigned long</td>
@@ -235,7 +235,7 @@ and <code>scanf()</code> casts for portable formatting/scanning.</p>
 </tr>
 <tr>
 <td>duk_double_t</td>
-<td>double</td>
+<td class="highlight">double</td>
 <td>double</td>
 <td>double</td>
 <td>%f or %lf<br />double</td>
diff --git a/website/style-guide.css b/website/style-guide.css
index acf441a3..4df34cc1 100644
--- a/website/style-guide.css
+++ b/website/style-guide.css
@@ -17,3 +17,7 @@
 .definename {
 	font-family: monospace;
 }
+
+.highlight {
+	background: #eeeeee;
+}