diff --git a/script.js b/script.js
index d342434..b6aaf39 100644
--- a/script.js
+++ b/script.js
@@ -1,3 +1,16 @@
 function update() {
-    document.getElementsByTagName('style')[0].innerHTML = document.getElementById("css-editor-textarea").value;
-}
\ No newline at end of file
+  const css = document.getElementById("css-editor-textarea").value;
+  const styleElements = document.getElementsByTagName("style");
+  const length = styleElements.length;
+
+  // If there is no style element, create one
+  if (length === 0) {
+    const styleElement = document.createElement("style");
+    document.head.appendChild(styleElement);
+  }
+
+  // Apply the CSS changes to all style elements
+  for (let i = 0; i < length; i++) {
+    styleElements[i].innerText = css;
+  }
+}