fix: fix fade in animation on compose button (#1557)

src/routes/_components/compose/ComposeBox.html

@@ -57,7 +57,7 @@
     background-color: var(--status-direct-background);
   }
 
-  .compose-box-fade-in {
+  :global(.compose-box-fade-in) {
     transition: opacity 0.2s linear; /* main page reveal */
   }