If you want to add javascript code to the tag <head> or <body> then click on the gear – menu item “Settings” and there select the tab scripts.
You will have three options where you can insert the code:
- Before </head>
- Before </body>
- After <body>
This is used primarily for javascript.
And if you want to insert HTML code in a specific place on the page, then drag and drop the “More” block with gears – on the page in the window that opens, select “Custom html”. Then double-click on the block and paste in the desired HTML code.