Magento version: 2.0.0

How to add a class of style into tag? I think it is added in the xml, right?

2 Answers 2


Yes it's done via XML I reckon you can use the attribute tag for this

So in your layout, you can do:

    <attribute name="class" value="my-body-class" />
    <attribute name="id" value="my-html-id"/>

An example in the default Magento install can be found here: https://github.com/magento/magento2/blob/2.0.0/app/code/Magento/Customer/view/frontend/layout/customer_account.xml

  • I added the htmlClass for <body> tag in the default.xml. then, i clear the cache but it not work for me.
    – Mike Zhang
    Commented Mar 19, 2016 at 10:29
  • @MikeZhang see my edit Commented Mar 19, 2016 at 11:30
  • 3
    Just a note on this functionality it is processed by vendor/magento/framework/View/Page/Config.php::addBodyClass() which strips out a lot of characters using regex and replaces them with - : $className = preg_replace('#[^a-z0-9]+#', '-', strtolower($className));
    – jzahedieh
    Commented Feb 6, 2017 at 15:25
  • +1 @jzahedieh, i.e. adding 'page--blocks' comes out on frontend as 'page-blocks' , annoying :/
    – 00-BBB
    Commented Sep 18, 2018 at 10:47
  • Also replaces underscores, why why why?!! :|
    – 00-BBB
    Commented Sep 18, 2018 at 10:52

In case you want to add a dynamic variable, eg. Store Code to the body class, you can take a look at the following example I made: https://github.com/samgranger/StoreCodeBodyClass


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