Hi. 

I want to print a report with no margin in the top

I have tried different layout

 t-call="web.internal_layout">
 t-call="web.basic_layout">
 t-call="web.external_layout">
 t-call="web.report_layout">
 t-call="web.minimal_layout">

Also tried with CSS

 id="report_assets_common" name="css pdf assets" inherit_id="web.report_assets_common">
     expr="." position="inside">
         rel="stylesheet" type="text/css" href="/my_module/static/src/css/report.css"/>
    

.article {
    margin-top: -140px !important;
    z-index: 1000;
}

This move the content up but it looks like the header is a white block in front

external_layout

basic_layout

Thanks