[TYPO3-english] Re: Blank spaces in quotation marks between header/main/footer

[K. F.]

<f:render partial="Header" /><f:render section="Main" /><f:render partial="Footer" />

Header starts and ends with <header>...</header>, Footer with <footer>...</footer>.
Default template starts with: <f:layout name="Default" /><f:section name="Main"><main> and ends with </main></f:section>

This is my default layout. What further information would be helpful?