h1       {
            color: red;
         } 
         
body     {
            background-color: silver;
         }
          
html     {
            font-family: Arial;
         }
           
h1       {
           background-color: yellow;
         }
         
h2       {
            color: blue;
         } 
              
p        {
            text-align: center;
         }/*
CSS Document */

a        {
            color: blue;
         }
.box     {
            border: 1px solid;
         }