diff --git a/assets/css/_variables.scss b/assets/css/_variables.scss
index af4154f..193d082 100644
--- a/assets/css/_variables.scss
+++ b/assets/css/_variables.scss
@@ -7,4 +7,8 @@
 $global-font-family: system-ui, -apple-system, BlinkMacSystemFont, PingFang SC, Microsoft YaHei UI, Segoe UI, Roboto, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, Helvetica, Arial, sans-serif !default;
 $global-font-size: 16px;
 $global-font-weight: 400;
-$global-line-height: 1.5rem;
\ No newline at end of file
+$global-line-height: 1.5rem;
+
+:root {
+  --footer-height: 38px;
+}
\ No newline at end of file