diff --git a/src/lib/menu/tracker/sprites/Sprite.svelte b/src/lib/menu/tracker/sprites/Sprite.svelte
index 84292af..18d1caa 100644
--- a/src/lib/menu/tracker/sprites/Sprite.svelte
+++ b/src/lib/menu/tracker/sprites/Sprite.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
   import type { Sprites } from '$lib/api/SpritesResource'
   import { formatPokemonSpeciesName } from '$lib/api/PokemonSpeciesResource.js'
+  import { base } from '$app/paths'
 
   export let sprites: Sprites
   export let pokemon: string
@@ -15,11 +16,17 @@
   $: normalAlt = isFemale
     ? `The sprite for female ${formatPokemonSpeciesName(pokemon)}`
     : `The sprite for ${formatPokemonSpeciesName(pokemon)}`
+
+  function onError(event: Event) {
+    const target = event.target as HTMLImageElement
+    target.src = `${base}/assets/unknown.gif`
+  }
 </script>
 
 <div class="sprite-root">
   <div class="sprite-container">
     <img
+      on:error={onError}
       id="shiny-{pokemon}-sprite"
       class="sprite"
       src={shinySprite}
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index f1d7c38..fff6400 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -86,6 +86,10 @@
     font-size: 150%;
   }
 
+  button.primary-button {
+    width: 100%;
+  }
+
   main {
     padding: calc(var(--top-bar-height) + var(--gap-length)) var(--gap-length);
     margin: auto;
diff --git a/static/assets/unknown.gif b/static/assets/unknown.gif
new file mode 100644
index 0000000..3869e9a
Binary files /dev/null and b/static/assets/unknown.gif differ