diff --git a/templates/challenges.html b/templates/challenges.html
index 60c174b..d5f5330 100644
--- a/templates/challenges.html
+++ b/templates/challenges.html
@@ -48,8 +48,8 @@ <h3 x-text="category"></h3>
                     <button
                         class="challenge-button btn btn-dark w-100 h-100"
                         :class="[
-                          c.solved_by_me ? "challenge-solved" : "",
-                          ...c.tags.map((tag) => `tag-${tag.value.replace(/ /g, "-")}`),
+                          c.solved_by_me ? 'challenge-solved' : '',
+                          ...c.tags.map((tag) => `tag-${tag.value.replace(/ /g, '-')}`),
                         ];"
                         :value="c.id" @click="loadChallenge(c.id)"
                     >