diff --git a/style.css b/style.css
index ea5eb0c..8302357 100644
--- a/style.css
+++ b/style.css
@@ -1,6 +1,3 @@
-*{
-    print-color-adjust: exact;
-}
 :root {
     --k: 1353651.53435435;
 }
@@ -36,6 +33,7 @@ td {
     height: 2em;
     mix-blend-mode: darken;
     padding: 2px;
+    print-color-adjust: exact;
 }
 .vlan {
     background-color: hsl(calc(var(--k)*var(--pvid)) 100% 60%);
diff --git a/vlans.php b/vlans.php
index db80a04..f040d7f 100644
--- a/vlans.php
+++ b/vlans.php
@@ -16,9 +16,9 @@ $stack = array();
 foreach ($interfaces as $interface) {
     if (!isset($stack[$interface["member"]])) $stack[$interface["member"]] = array();
     $interface["style"] = "";
-    if ($interface["pvid"]) $interface["style"] .= "--pvid: ${interface["pvid"]}; ";
-    if ($interface["tagged"]) $interface["style"] .= "--tagged: ${interface["tagged"]}; ";
-    if ($interface["untagged"]) $interface["style"] .= "--untagged: ${interface["untagged"]}; ";
+    if (!empty($interface["pvid"])) $interface["style"] .= "--pvid: ${interface["pvid"]}; ";
+    if (!empty($interface["tagged"])) $interface["style"] .= "--tagged: ${interface["tagged"]}; ";
+    if (!empty($interface["untagged"])) $interface["style"] .= "--untagged: ${interface["untagged"]}; ";
     $stack[$interface["member"]][$interface["port"]] = $interface;
 }