magento set price in 4 digit after decimal

app/code/core/Mage/Adminhtml/Block/Catalog/Product/Helper/Form/Price.php

return number_format($value, 4, null, '');

Add header footer in checkout page in Magento 2

Add below code in app/design/frontend/ModuleName/Theme/Magento_Checkout/page_layout/checkout.xml

<?xml version=”1.0″?>
<!–
/**
* Copyright © 2016 Magento. All rights reserved.
* See COPYING.txt for license details.
*/
–>
<layout
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance&#8221; xsi:noNamespaceSchemaLocation=”urn:magento:framework:View/Layout/etc/page_layout.xsd”>
<update handle=”empty”/>
<referenceContainer name=”page.wrapper”>
<container name=”header.container” as=”header_container” label=”Page Header Container” htmlTag=”header” htmlClass=”header” before=”main.content”/>
<container name=”page.top” as=”page_top” label=”After Page Header” after=”header.container”/>
<container name=”footer-container” as=”footer” before=”before.body.end” label=”Page Footer Container” htmlTag=”footer” htmlClass=”footer”/>
</referenceContainer>
</layout>