*{
     box-sizing: border-box;
 }
 
 article::after{
     clear: both;
     float: none;
     display: block;
     content: " ";
 }
 
 h1,
  h2{
     margin-left: -3em;
 }
 
 h3{
     text-align: center;
     border-bottom: thin solid black;
 }
 
 body{
     margin-left: 12.5em;
 }
 
 header{
     max-width: 30em;
     width: 75vw;
 }
 
 section#ingredients{
     float: left;
     max-width: 10em;
     width: 24vw;
 }
 
 section#instructions{
     float: left;
     max-width: 20em;
     margin-left: 2vw;
     width: 49vw;
 }
 
 article + article h2{
     margin-top: 1em;
     padding-top: 1em;
     border-top: thin solid black;
 }