Well this seemed to work for me -.categories>li .category-children .icon, .category>ul>li .category-children .icon
Now on to control the layout of the sub categories !!!!! 🙂
I want to...
</head>when user view register page.
<form>tag.and Add a
</body>when user view register page.
Cloud tell me which Hook i should choose? I had tried
filter:header.build ,but it didn't work
There is no
filter.footer.build footer is rendered separately from the page. And those hooks are only used to add extra data to the page so templates can use them to render new stuff. Easiest is to just create a plugin and copy footer.tpl from your base theme ie persona and add your custom code there.