h1, h2, h3, h4, h5, h6 { color: green; } 
h1 { text-align: center; } 
p { line-height: 150% } 
body { background-color: yellow; 
       font-family: sans-serif, Helvetica, Courier; 
       line-height: 150% 
     } 
ul li { font-size: 80%; 
        color: red; } 
.bigchar { font-size: 125% } 
.smallchar { font-size: 75% }