p {
text-align: justify;
padding-left: 20px;
}

I insert it in the html css code but the padding when I inspect it is disabled

why?

Where do you insert it?
What version of Atahualpa and WP?
What is your url?

inserted in HTML CSS insert
/*Allinea il testo giustificato*/
p {text-align: justify;
padding-left:20px;
padding-right:20px;
}

justify work properly...
but the padding nothing

website is http://www.vocemea.it

and version wp and atahualpa is the last