body {margin: 0px; }
h1 {
    color: red;
    text-align:center;
   } 
h2 {color: blue;
    text-align:center;
    font-weight: bold;
   }
blockquote {
            font-weight: bold;
            background-color: white;
           }
h4 {
    color: red;
    text-align:center;
    font-weight: bold;
   }

a.button {
          
          text-align: center;
          color: black;
          text-decoration: none;
          padding: 0px 0px 0px 0px;
          font: bold 16px arial;
         }
a.button:hover {
                color: white;
                background: green;
               }