body {
   padding-top: 20px;
   padding-bottom: 40px;
 }

 /* Custom container */
 .container-narrow {
   margin: 0 auto;
   max-width: 700px;
 }
 .container-narrow > hr {
   margin: 30px 0;
 }

 .icon {
   width: 50px;
   height: 50px;
   text-align: center;
   margin: 1em auto;
 }

 /* Main marketing message and sign up button */
 .jumbotron {
   margin: 60px 0;
   text-align: center;
 }
 .jumbotron h1 {
   font-size: 48px;
   line-height: 1;
 }
 .jumbotron p {
   font-size: 32px;
   font-style: italic; 
 }
 .jumbotron .btn {
   font-size: 21px;
   padding: 14px 24px;
 }

 /* Supporting marketing content */
 .marketing {
   margin: 60px 0;
 }
 .marketing p + h4 {
   margin-top: 28px;
 }