diff --git a/readme.md b/readme.md
index df6e7cc..608eca2 100644
--- a/readme.md
+++ b/readme.md
@@ -6,3 +6,4 @@ My portfolio website
 
 - Mobile support
 - Problem toggler
+- stop overflow
diff --git a/styles/post.css b/styles/post.css
index a4c9518..d40ca7f 100644
--- a/styles/post.css
+++ b/styles/post.css
@@ -96,7 +96,7 @@ header {
 }
 
 .problem-toggle {
-  font-family: "Courier New", monospace;
+  font-family: monospace;
   position: absolute;
   cursor: pointer;
   left: -25px;