+- Then the second page
+- Then the third page
+
+
+- Inside a page
+ 1. Fieldsets
+ 2. Input inside it
+ 3. Then button
+
+- Clicking a button will lead to action
+
+
+
+ getRef('convert_to_flo').onclick = evt => {
+ const btc_bech = getRef('convert_btc_input').value.trim();
+ if (btc_bech === '') {
+ getRef('convert_btc_input').focusIn()
+ return notify('Please enter BTC address', 'error');
+ }
+
+```
+
+- Or we can add eventlisteners from Javascript side
+- We add eventListeners to any id
+```javascript
+ getRef('convert_btc_private_key_form').addEventListener('invalid', e => {
+ getRef('flo_private').value = '';
+ getRef('converted_flo_address').value = '';
+ })
+```
+
+- Then the navbar
+`