Custom blog in Adobe Muse and BC can't get body copy css to work

Hello,

I've been creating a custom blog through Adobe Muse and in Business Catalyst according to directions I found in a video.

Seems like everything is working out for the most part with adding custom styles to modulestylesheets.css however, I can not for the life of me get the body text of the

blog to cooperate. At least according to the video I'm following.

This is the css I'm adding according to instructions and it's the only part that won't work - won't change. My guess is that something somewhere else is over riding this but I can't find it.

/* blog body text */
.post-body
{
    color: #534741;!important;
    font-family: muli;sans-serif;!important;
    font-size: 12px;!important;
    font-weight: 400;!important;
    padding: 0;!important;
    line-height: 84px;!important;
}

As you can see - I even added the important tag to see if it would work but still nothing. I'm at a loss and need to have this site complete and launched with new domain by tonight!

The link:
http://lisastendig.businesscatalyst.com/embodiment-blog

I'm trying to get the body copy to be the font Muli as well as with some proper interline spacing.

I hope someone can help today - it would be so much appreciated. Thank you!