Center tagline but justify text in the rest of site

Site URL: https://emgss.org/

Hi, I am trying to justify the text on the website which works fine with the code:

 p {
 text-align: justify;
}

However, this justifies the the tagline too, and I want to keep it centred.

Thanks for your help!

Add to Home > design > Custom CSS

/* center tagline */
#header .site-tagline {
    text-align: center !important;
}