@charset "UTF-8";
 *{margin:0; padding:0;}

 body{background-color: #cfc;}
 main{
     width: 960px;
     margin: 0 auto;
 }
 
 h1{
     margin-top: 100px;
     text-align: center;
 }

 p{
     margin-top: 30px;
 }

h3{
    margin-top: 300px; 
    text-align: center;
 }