Css – See :hover state in Chrome Developer Tools

There is currently no way to select the parent of an element in CSS.

If there was a way to do it, it would be in either of the current CSS selectors specs:

• Selectors Level 3 Spec
• CSS 2.1 Selectors Spec

That said, the Selectors Level 4 Working Draft includes a :has() pseudo-class that will provide this capability. It will be similar to the jQuery implementation.

li:has(> a.active) { /* styles to apply to the li tag */ }

However, as of 2021, this is still not supported by any browser.

In the meantime, you'll have to resort to JavaScript if you need to select a parent element.

Close chrome (or chromium) and restart with the --disable-web-security argument. I just tested this and verified that I can access the contents of an iframe with src="http://google.com" embedded in a page served from "localhost" (tested under chromium 5 / ubuntu). For me the exact command was:

Note : Kill all chrome instances before running command

chromium-browser --disable-web-security --user-data-dir="[some directory here]"

The browser will warn you that "you are using an unsupported command line" when it first opens, which you can ignore.

From the chromium source:

// Don't enforce the same-origin policy. (Used by people testing their sites.)
const wchar_t kDisableWebSecurity[] = L"disable-web-security";

Before Chrome 48, you could just use:

chromium-browser --disable-web-security