diff --git a/src/views/system/userManagement.vue b/src/views/system/userManagement.vue
index 7ddb683..0fde1cd 100644
--- a/src/views/system/userManagement.vue
+++ b/src/views/system/userManagement.vue
@@ -178,7 +178,7 @@ export default {
 
   .deviceBox {
     border: 1px solid #dddddd;
-    height: calc(100% - 24x);
+    height: calc(100% - 24px);
     padding: 12px;
     border-radius: 4px;
   }