The side bar contains navigational links or menu. It also contains close icon to close the sidebar.
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The header contains the logo image or text with website name. It also contains the sidebar toggle icon either on the right side or left side.
The amp-form extension allows you to create forms <form> to submit input fields in an AMP document.
Most HTML tags can be used directly in AMP HTML, but certain tags, such as the <img> tag, are replaced with equivalent or slightly enhanced custom AMP HTML tags.
When creating AMP pages and content, you should use the HTTPS protocol.