body {
     margin-left:  5%;
     margin-right: 5%;
     background-image: url("chalk.jpg");
     }

h1, h2, h3 {
    color: #800080;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center
    }


h4, h5, h6 {
    color: #800080;
    font-family: Arial, Helvetica, sans-serif;
    }