css Blog posts on mobile are too wide. How Can I add space on each side?

Site URL: http://www.jenniferskogboudoir.com/journal/2022/8/31/comfortable-with-the-camera

I'm trying to figure out how to have my blog posts display like 95% wide.  The text is going all the way to the edges of my phone and it doesn't look good.  Does anyone know what CSS I can input to fix this?  

Thank you!

Edit: this worked if anyone else needs:

/*add padding to text for mobile devices*/
    @media only screen and (max-width: 640px){
      .sqs-block-html .sqs-block-content {
          padding-right: 25px;
          padding-left: 25px;
      }

Add this to Design > Custom CSS

@media screen and (max-width:640px) {
#navigator article .main section .body {
    max-width: 95%;
}
}