html{ 
   font-size: 1px;/*for using REM units*/
}
body{
   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
   font-size: 16rem;
   font-weight: 400;
   line-height: 1.3;
   color: #222;
}