diff --git a/src/voxip_kiosk/agent.py b/src/voxip_kiosk/agent.py
index 8dd6a75..8413008 100644
--- a/src/voxip_kiosk/agent.py
+++ b/src/voxip_kiosk/agent.py
@@ -40,6 +40,7 @@ PROBE_MAX_AGE_LOADING = 10
 PROBE_MAX_AGE_ONLINE = 60
 HUNG_RELOAD_AFTER = 3
 HUNG_RESTART_AFTER = 6
+NO_NETWORK = "Geen netwerkverbinding (netwerkkabel los?)"
 BLANK_URLS = {"", "about:blank", "chrome://newtab/", "chrome://new-tab-page/"}
 
 
@@ -124,6 +125,17 @@ class Agent:
         log.warning(message)
         self.state["last_error"] = {"at": int(self.wall()), "message": message}
 
+    def has_network(self) -> bool:
+        """False when no interface has an address, e.g. the cable is out and there is no wifi."""
+        return bool(self.addresses())
+
+    def show_offline(self, config: dict[str, Any], reason: str) -> None:
+        if self.offline_since is None:
+            self.offline_since = self.wall()
+            self.state["offline_since"] = int(self.offline_since)
+        self.error(f"Kiosk-URL niet bereikbaar ({reason}); offlinepagina getoond")
+        self.navigate(self.offline_url(config, reason))
+
     def setup_required(self) -> bool:
         return self.paths.setup_code_file.exists() and not self.paths.admin_file.exists()
 
@@ -187,6 +199,8 @@ class Agent:
 
         if kind != "remote" or url_changed:
             ok, reason = self.reachable(target, 0 if url_changed else PROBE_MAX_AGE_LOADING)
+            if not ok and not self.has_network():
+                reason = NO_NETWORK
             if ok:
                 if self.offline_since is not None:
                     log.info("Kiosk-URL weer bereikbaar na %.0f s", self.wall() - self.offline_since)
@@ -195,14 +209,19 @@ class Agent:
                 self.offline_since = None
                 self.state["offline_since"] = None
             elif kind != "offline" or url_changed:
-                if self.offline_since is None:
-                    self.offline_since = self.wall()
-                    self.state["offline_since"] = int(self.offline_since)
-                self.error(f"Kiosk-URL niet bereikbaar ({reason}); offlinepagina getoond")
-                self.navigate(self.offline_url(config, reason))
+                self.show_offline(config, reason)
             self.hung = 0
             return
 
+        # Without any network the page cannot recover by itself: say so on screen. When only
+        # the server is unreachable the page stays, so InfoFlow can show its offline cache.
+        if not self.has_network():
+            self.state.update(target_reachable=False, reason=NO_NETWORK, checked_at=int(self.wall()))
+            self._probe = None
+            self.hung = 0
+            self.show_offline(config, NO_NETWORK)
+            return
+
         if self.last_load is None:
             self.last_load = self.clock()
 
diff --git a/tests/test_agent.py b/tests/test_agent.py
index 00d997f..1648351 100644
--- a/tests/test_agent.py
+++ b/tests/test_agent.py
@@ -100,7 +100,7 @@ def test_chromium_error_page_is_replaced(env):
     assert "offline.html" in browser.url
 
 
-def test_running_page_is_left_alone_when_network_drops(env):
+def test_running_page_is_left_alone_when_the_server_is_unreachable(env):
     """Pages with their own offline cache (e.g. InfoFlow displays) must keep running."""
     agent, browser, probe, clock, _ = env
     browser.url = "https://schermen-ijsselflat.voxip.nl"
@@ -178,3 +178,27 @@ def test_offline_page_never_receives_the_token(env, paths):
     agent.tick()
     assert "offline.html" in browser.url
     assert "geheim" not in browser.url and "3456" in browser.url
+
+
+def test_offline_page_when_the_network_link_is_gone_then_back(env):
+    agent, browser, probe, clock, _ = env
+    network = {"eth0": ["192.168.1.20/24"]}
+    agent.addresses = lambda: dict(network)
+    browser.url = "https://schermen-ijsselflat.voxip.nl"
+    agent.tick()
+    assert browser.navigations == []
+
+    network.clear()  # cable out
+    probe.ok = False
+    clock.t += 5
+    agent.tick()
+    assert "offline.html" in browser.url and "netwerkkabel" in browser.url
+    clock.t += 5
+    agent.tick()
+    assert len(browser.navigations) == 1  # no re-navigation while it stays down
+
+    network["eth0"] = ["192.168.1.20/24"]  # cable back in
+    probe.ok = True
+    clock.t += 11
+    agent.tick()
+    assert browser.url == "https://schermen-ijsselflat.voxip.nl"
diff --git a/www/kiosk.css b/www/kiosk.css
index 642d8fd..6ac7802 100644
--- a/www/kiosk.css
+++ b/www/kiosk.css
@@ -1,5 +1,5 @@
 /* Local pages shown on the kiosk screen itself (file://). Same look as the InfoFlow
-   display (dark theme): flat dark grey, white type, panels with a blue top edge. */
+   display (dark theme): flat dark grey, white type, plain panels. */
 :root {
   color-scheme: dark;
   --bg: #111827;
@@ -21,7 +21,7 @@ body { font-family: ui-sans-serif, system-ui, "DejaVu Sans", "Liberation Sans",
 .clock { font-size: clamp(36px, 8vmin, 110px); font-weight: 300; line-height: 1.1; font-variant-numeric: tabular-nums; }
 
 .middle { flex: 1; display: flex; align-items: center; justify-content: center; padding: 3vmin 0; }
-.panel { width: min(100%, 1100px); background: var(--panel); border-top: 4px solid var(--accent); border-radius: 8px; padding: 4.5vmin 5vmin; }
+.panel { width: min(100%, 1100px); background: var(--panel); border-radius: 8px; padding: 4.5vmin 5vmin; }
 h1 { font-size: clamp(26px, 4.6vmin, 64px); font-weight: 600; margin: 0 0 1.5vmin; }
 p { font-size: clamp(16px, 2.6vmin, 34px); color: var(--muted); margin: 0 0 1vmin; }
 .link { margin-top: 3.5vmin; padding-top: 2.5vmin; border-top: 1px solid var(--line); font-size: clamp(14px, 2.2vmin, 28px); color: var(--muted); overflow-wrap: anywhere; }