edit css style of an element with a space in its class name

Question

I\'m creating a tumblr them and I have to write an external CSS file but I am having trouble editing the css style of the post elements.

This its structure:

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Answer 1

The problem is that the class name has a space in it.

This is not possible in CSS. What you are doing is giving the element two classes.

You can address them such:

.post.quote { .... }

but in your case, it's probably better to use a valid separator like

post_quote