# HTML This directory contains tests for [HTML](https://html.spec.whatwg.org/multipage/). Sub-directory names should be based on the URL of the corresponding part of the multipage-version specification. For example, the URL of "8.3 Base64 utility methods" is [https://html.spec.whatwg.org/multipage/webappapis.html#atob](https://html.spec.whatwg.org/multipage/webappapis.html#atob). So the directory in WPT is [webappapis/atob/](/html/webappapis/atob). For historical reasons, parts of HTML have their own directories: * [/custom-elements](/custom-elements) * [/eventsource](/eventsource) * [/imagebitmap-renderingcontext](/imagebitmap-renderingcontext) * [/innerText](/innerText) * [/shadow-dom](/shadow-dom) * [/webmessaging](/webmessaging) * [/websockets](/websockets) * [/webstorage](/webstorage) * [/workers](/workers) * [/worklets](/worklets) * [/x-frame-options](/x-frame-options)