body {background: #CCFFFF; 

margin-bottom: 100px; 

margin-top: 50px;

margin-left: 100px; 

margin-right: 100px;}


h1,h2 {font-weight: bold;}


h1, h2, th, td, .intro {text-align: center;}


img {border: 0}


table {

margin-right: auto;

margin-left: auto;}