Hello Wafaa Mohamed,

You need to override "external_layout_backgroud" with the following code:

<template id="external_layout_background_inherit" inherit_id="web.external_layout_background">

<xpath expr="//div[@class='o_background_header']" position="replace">

## Your Code

</xpath>

</template>

Hope your query will resolve by now. Feel free to ask in case of any query

 Thanks

Anisha Bahukhandi

Technical Content Writer