body{ background-color: lightblue;}
header h1{  
    text-align: center;
    border: 3px solid white; }
nav ul{list-style-type: lower-roman;  }
a:link{color: grey;}
a:visited{color: grey;}
a:hover{color: pink;}
a:active{color: white;}
div #content 
{
    
    text-align: left;
    font-size: 25px;
    font-family: "Comic Sans";
    color: black;
    border: 3px solid white; }
div #thumbnail {
    height: 100px;
    width: 200px;}
div #footer{
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: blue;
    color: black;
    text-align: center;
}