You can remove Header Panel/Top Links / Welcome Message from header by adding the below line to layout xml
<?xml version="1.0"?> <page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd"> <body> <referenceContainer name="header.container"> <referenceBlock name="header.panel.wrapper" remove="true" /> </referenceContainer> </body> </page>