diff --git a/src/sass/_base.scss b/src/sass/_base.scss
index 31ef857..efe6a10 100644
--- a/src/sass/_base.scss
+++ b/src/sass/_base.scss
@@ -505,6 +505,7 @@ img {
 
     border: $border-2 solid var(--code-copy-border-color);
     border-radius: $border-radius;
+    background: var(--code-background);
     width: 2.2rem;
     height: 2.2rem;