diff --git a/tildes/scss/_base.scss b/tildes/scss/_base.scss
index 4525ba2..922f078 100644
--- a/tildes/scss/_base.scss
+++ b/tildes/scss/_base.scss
@@ -198,7 +198,7 @@ table {
 
 td,
 th {
-  border-bottom: $border-width solid;
+  border: $border-width solid;
   padding: $unit-3 $unit-2;
 }
 
diff --git a/tildes/scss/themes/_theme_base.scss b/tildes/scss/themes/_theme_base.scss
index a384e8f..032a278 100644
--- a/tildes/scss/themes/_theme_base.scss
+++ b/tildes/scss/themes/_theme_base.scss
@@ -98,12 +98,13 @@
     background-color: map-get($theme, "background-secondary");
   }
 
-  td {
+  td,
+  th {
     border-color: map-get($theme, "border");
   }
 
   th {
-    border-color: map-get($theme, "foreground-highlight");
+    border-bottom-color: map-get($theme, "foreground-highlight");
   }
 
   .form-autocomplete {