diff --git a/assets/style.css b/assets/style.css
index 836f8e5..2524552 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -37,7 +37,6 @@ body>div:not([id]) {
 
     float: left;
     height: 100%;
-    border: 1px solid;
     width: calc(100% / var(--columns));
 }
 
diff --git a/assets/style.mobile.css b/assets/style.mobile.css
index 5214d25..1037191 100644
--- a/assets/style.mobile.css
+++ b/assets/style.mobile.css
@@ -1,6 +1,7 @@
 @media screen and (max-width: 767px) {
-    body>div {
+    body>div:not([id]) {
         width: 100% !important;
+        border-bottom: 1px solid;
     }
 
     body>div>div#inner {