improve floating compose button

routes/_components/compose/ComposeBox.html

@@ -53,7 +53,8 @@
     position: -webkit-sticky;
     position: sticky;
     top: 10px;
-    z-index: 200;
+    z-index: 1000;
+    pointer-events: none;
   }
 
   .compose-content-warning-wrapper {

routes/_components/compose/ComposeButton.html

@@ -26,6 +26,7 @@
     border-radius: 2px;
     margin: 5px 15px 15px 5px;
     background: var(--compose-button-halo);
+    pointer-events: auto;
   }
   .compose-box-button {
     grid-area: button;
@@ -33,6 +34,7 @@
     text-transform: uppercase;
     position: relative;
     margin: 5px;
+    pointer-events: auto;
   }
   .compose-box-button-spinner, .compose-box-button-compose {
     position: absolute;