form-button-ref.html (391B)
1 <!DOCTYPE HTML> 2 <meta charset="utf-8"> 3 <style> 4 div.outer { 5 width: 450px; 6 font-size: 34px; 7 } 8 9 button { 10 font-size: 34px; 11 } 12 </style> 13 <!-- 14 In a 450px container, the minimum font size at 15em per line is 30px. 15 This means we map 0px-45px into 30px-45px, so 12px gets mapped to 34px. 16 --> 17 <div class="outer"> 18 <form><button>Add Comment</button></form> 19 </div>