fix: Make the scanlines on top, move nav even more top

sass/_crt.scss

@@ -63,6 +63,7 @@
     position: absolute;
     top: 0;
     width: 100%;
+    z-index: 1;
 
     @keyframes scanlines {
       from {

sass/_nav.scss

@@ -9,7 +9,7 @@
   position: sticky;
   top: 1rem;
   max-width: min(calc(var(--content-width) + 10rem), 90%);
-  z-index: 1;
+  z-index: 999;
 
   nav {
     display: flex;