diff --git a/source/css/common/code-block/highlight.styl b/source/css/common/code-block/highlight.styl
index e3f5b2e..6894180 100644
--- a/source/css/common/code-block/highlight.styl
+++ b/source/css/common/code-block/highlight.styl
@@ -8,6 +8,7 @@ $code-block {
   font-size 0.96rem
   line-height 1.5rem
   background var(--highlight-background)
+  -webkit-text-size-adjust none
 }