refactor: use classic for conditional classes

apps/website/src/components/atoms/ScrollingTitle.svelte

@@ -8,6 +8,7 @@
 </style>
 
 <script lang="ts">
+    import cx from 'classix'
     import { map } from 'utils/math'
     import reveal from '$animations/reveal'
 
@@ -39,11 +40,11 @@
         parallax = isLarger ? map(scrollY, offsetStart, offsetEnd, 0, -toTranslate, true) : 0
     }
 
-    const classes = [
+    $: classes = cx(
         'scrolling-title',
         'title-huge',
         $$props.class
-    ].join(' ').trim()
+    )
 
     const revealOptions = animate ? {
         children: '.char',