diff --git a/assets/css/common/footer.css b/assets/css/common/footer.css
index 5addb1e..0580e95 100644
--- a/assets/css/common/footer.css
+++ b/assets/css/common/footer.css
@@ -7,7 +7,7 @@
 .footer {
     max-width: calc(var(--main-width) + var(--gap) * 2);
     margin: auto;
-    padding: calc((var(--footer-height) - var(--gap)) / 2) var(--gap);
+    padding: calc(((var(--footer-height) - var(--gap)) / 2) var(--gap));
     text-align: center;
     line-height: 24px;
 }
diff --git a/assets/css/core/zmedia.css b/assets/css/core/zmedia.css
index a68fd71..4c1a277 100644
--- a/assets/css/core/zmedia.css
+++ b/assets/css/core/zmedia.css
@@ -25,7 +25,7 @@
 
     /* footer */
     .footer {
-        padding: calc((var(--footer-height) - var(--gap) - 10px) / 2) var(--gap);
+        padding: calc(((var(--footer-height) - var(--gap) - 10px) / 2) var(--gap));
     }
 }