diff --git a/assets/index.less b/assets/index.less
index 1eccdd4..a53c492 100644
--- a/assets/index.less
+++ b/assets/index.less
@@ -90,6 +90,10 @@
       animation-duration: 0.3s;
       animation-name: amCheckboxOut;
     }
+
+    @media print {
+      box-shadow: inset 0 0 0 16px #3dbcf6;
+    }
   }
 }
 
@@ -111,6 +115,10 @@
         animation-name: none;
         border-color: #cccccc;
       }
+
+      @media print {
+        box-shadow: inset 0 0 0 16px #f3f3f3;
+      }
     }
   }