box-sizing breaks svg

I was looking up some things and wound up at W3Schools where it was suggested to put this at the top of the CSS (minus the comment):

    * {
      margin: 0;
      /* this breaks the svg search button: */
      box-sizing: border-box;
    }

and so I added this to the CSS rules for svg to resolve the problem:

      box-sizing: unset;

Code