fix 404 page, add dashed grid bg

web/input.css

@@ -17,3 +17,53 @@
         #ff637e 120%
     );
 }
+
+.dashed-bottom-fade-grid {
+    position: absolute;
+    inset: 0;
+    z-index: 0;
+
+    background-image:
+        linear-gradient(to right, #e7e5e4 1px, transparent 1px),
+        linear-gradient(to bottom, #e7e5e4 1px, transparent 1px);
+    background-size: 20px 20px;
+    background-position:
+        0 0,
+        0 0;
+
+    mask-image:
+        repeating-linear-gradient(
+            to right,
+            black 0px,
+            black 3px,
+            transparent 3px,
+            transparent 8px
+        ),
+        repeating-linear-gradient(
+            to bottom,
+            black 0px,
+            black 3px,
+            transparent 3px,
+            transparent 8px
+        ),
+        radial-gradient(ellipse 100% 80% at 50% 100%, #000 50%, transparent 90%);
+    -webkit-mask-image:
+        repeating-linear-gradient(
+            to right,
+            black 0px,
+            black 3px,
+            transparent 3px,
+            transparent 8px
+        ),
+        repeating-linear-gradient(
+            to bottom,
+            black 0px,
+            black 3px,
+            transparent 3px,
+            transparent 8px
+        ),
+        radial-gradient(ellipse 100% 80% at 50% 100%, #000 50%, transparent 90%);
+
+    mask-composite: intersect;
+    -webkit-mask-composite: source-in;
+}