diff --git a/ProjetProgWeb/app.js b/ProjetProgWeb/app.js
index 273a09b..421b2b7 100644
--- a/ProjetProgWeb/app.js
+++ b/ProjetProgWeb/app.js
@@ -302,10 +302,10 @@ function updateFilter(f) {
     }
 
     filters.forEach(elem => {
-        elem.style.boxShadow = 'none'
+        elem.classList.remove('selected')
     })
 
-    document.querySelector('#f-' + queryOption).style.boxShadow = 'inset rgba(0, 0, 0, 0.40) 0 0 5px'
+    document.querySelector('#f-' + queryOption).classList.add('selected')
 }
 
 function scrollTop() {
@@ -367,8 +367,8 @@ navbarForm.addEventListener('submit', e => {
     submitForm(0)
 })
 
-document.addEventListener('scroll', e => {
-    if (window.scrollY != 0) {
+document.addEventListener('scroll', () => {
+    if (window.scrollY !== 0) {
         document.querySelector('#scrollToTop').style.display = 'block'
     } else {
         document.querySelector('#scrollToTop').style.display = 'none'
diff --git a/ProjetProgWeb/stylesheet.css b/ProjetProgWeb/stylesheet.css
index 3d3d482..f9ab1cd 100644
--- a/ProjetProgWeb/stylesheet.css
+++ b/ProjetProgWeb/stylesheet.css
@@ -203,6 +203,11 @@ header {
     background-color: #6dc1e3;
 }
 
+.selected {
+    background-color: #1c6480 !important;
+    box-shadow: inset #0003 0 0 5px;
+}
+
 .slide-in {
     animation: slide-in 200ms;
     animation-fill-mode: forwards;