diff --git a/_layouts/default.html b/_layouts/default.html
index ad0b1da..d29d2a5 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -11,7 +11,7 @@
     <script>
         MathJax = {
             tex: {
-                inlineMath: [['$', '$']]
+                inlineMath: [['$', '$'], ["$'", "'$"]]
             }
         };
     </script>
@@ -21,7 +21,7 @@
         .language-shell.highlighter-rouge {
             /* New styles for Shell code */
             background-color: #d5e3f3; /* Example background color */
-            color: #333; /* Example text color */
+            color: #000000; /* Example text color */
             padding: 10px; /* Example padding */
             font-family: 'Courier New', monospace; /* Monospaced font for code */
             /* Add other styling properties as needed */
@@ -29,7 +29,7 @@
         .language-python {
             /* New styles for Python code */
             background-color: #d5e3f3; /* Light grey background */
-            color: #202020; /* Dark grey text color */
+            color: #000000; /* Dark grey text color */
             padding: 10px; /* Padding around the code block */
             font-family: 'Courier New', monospace; /* Monospaced font for code */
             /* Add other styling properties as needed */
@@ -37,7 +37,7 @@
         .language-matlab {
             /* New styles for MATLAB code */
             background-color: #d5e3f3; /* Light yellow background */
-            color: #0052cc; /* MATLAB blue text color */
+            color: #000000; /* MATLAB blue text color */
             padding: 10px; /* Padding around the code block */
             font-family: 'Courier New', monospace; /* Monospaced font for code */
             /* Add other styling properties as needed */