header responsive

web/themes/custom/popsu_colloque/js/script.js

@@ -61,9 +61,19 @@ function slide() {
   });
 }
 
-
+function burger() {
+  var hamburgers = document.querySelector(".hamburger");
+  var nav = document.querySelector(".nav-main");
+  hamburgers.addEventListener("click", function() {
+    this.classList.toggle("is-active");
+    nav.classList.toggle("is-active");
+    $('html, body').toggleClass("is-active");
+    $('#block-popsu-colloque-branding').toggleClass("is-active");
+  });
+}
 
 $( document ).ready(function() {
   notes();
   slide();
+  burger();
 });