<template id="theme_layout" inherit_id="portal.frontend_layout"
          name="Top Account Header Dropdown">
    <!-- Hide Administrator -->
    <xpath expr="//header//ul[@id='top_menu']/li[hasclass('dropdown')]" position="replace">

    </xpath>
</template>
<template id="new_custom_layout" inherit_id="website.layout" name="Top Header">

    <xpath expr="//div[@id='wrapwrap']//header//nav[hasclass('navbar')]" position="attributes">
        <attribute name="style">display: none;</attribute>
    </xpath>

<xpath expr="//div[@id='wrapwrap']//header//nav[hasclass('navbar')]" position="before">

"ADD YOUR HEADER HERE"

Hello,

For this you have to add this in your module . in your_module/views/your_file.xml and add this:

<template id="new_footer_default_extend" inherit_id="website.footer_default" customize_show="True" name="Automatic Footer">
     <xpath expr="//div[@id='footer']" position="replace">
     </xpath>
</template>

In top right of your website you should see "customize > html editor" Maybe you can do it there. In version 8, it doesnt work so in that case you might be able to accomplish the same editing layout files in .... /addons/website/views/ or looking for css files to modify look of it.

navbar-header is where logo is located, but also menu items!

Good luck~