diff --git a/editor.html b/editor.html
index 51da164..fe24d32 100644
--- a/editor.html
+++ b/editor.html
@@ -208,18 +208,23 @@
 
         let StopExecution;
         let term;
+        let fitAddon;
         let inputResolve;
-        let inputBuffer = '';
-        let acceptingInput = false;
 
         term = new Terminal({
             cursorBlink: true,
             theme: {
                 background: '#1e1e1e'
-            }
+            },
+            scrollback: 10000,
+            allowProposedApi: true
         });
+        fitAddon = new FitAddon.FitAddon();
+        term.loadAddon(fitAddon);
         term.open(document.getElementById('terminal'));
-        term.fit();
+
+        // Use a small timeout to ensure the DOM is ready before fitting
+        setTimeout(() => fitAddon.fit(), 0);
 
         function outf(text) {
             term.write(text.replace(/\n/g, '\r\n'));
@@ -339,8 +344,8 @@
                 canvas.width = container.clientWidth;
                 canvas.height = container.clientHeight;
             }
-            if (term) {
-                term.fit();
+            if (fitAddon) {
+                fitAddon.fit();
             }
         });