diff --git a/src/scripts/main.js b/src/scripts/main.js
index ad9a93a7..c60eadd8 100644
--- a/src/scripts/main.js
+++ b/src/scripts/main.js
@@ -1 +1,18 @@
-'use strict';
+document.addEventListener('DOMContentLoaded', function () {
+  const gallery = document.querySelector('.gallery');
+
+  // eslint-disable-next-line no-shadow
+  gallery.addEventListener('click', function (event) {
+    const targetHref = event.target.closest('a');
+
+    if (!targetHref) {
+      return;
+    }
+
+    event.preventDefault();
+
+    const largeImg = document.getElementById('largeImg');
+
+    largeImg.src = targetHref.href;
+  });
+});