diff --git a/themes/mytheme/assets/css/common/post-single.css b/themes/mytheme/assets/css/common/post-single.css
index 6771db2..cb3a38b 100644
--- a/themes/mytheme/assets/css/common/post-single.css
+++ b/themes/mytheme/assets/css/common/post-single.css
@@ -48,6 +48,14 @@
     line-height: 2;
 }
 
+@media (max-width: 768px) {
+    .post-content {   
+        font-size: 15px;
+        letter-spacing: 0px;
+        line-height: 1.6;
+    }
+}
+
 .post-content h3,
 .post-content h4,
 .post-content h5,a