Padding set 0px not working in css

Hi lovely people

I am trying to align an embedded form with the other blocks on the page.

Using google inspect I can fix it by changing padding to 0px, but when I paste in the css, it does not make the change on the website.

This is what I copied from google inspect which I then pasted in css (and changed padding to 0px):

#mlb2-4833518.ml-form-embedContainer .ml-form-embedWrapper .ml-form-embedBody, #mlb2-4833518.ml-form-embedContainer .ml-form-embedWrapper .ml-form-successBody {
padding: 20px 20px 0 20px;
}

What am I doing wrong here?

Any help would be hugely appreciated.

thank you!

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