body {
	background: linear-gradient(135deg, rgb(0, 0, 0), white 65%, rgb(255, 255, 255)); 
  margin: 0px; 
  padding: 0px; 
  line-height: 1.5; 
  font-family: Verdana, sans-serif; 
  font-size: 1.0em;
}
div#main {
	margin: 2em auto; 
  border-radius: 75px; 
  border: 2px solid gray; 
  width: 900px; 
  box-shadow: 0px 0px 45px gray; 
  background-color: snow;
}
header {
	padding: 50px; 
  text-align: center; 
  border-bottom-color: black; 
  border-bottom-width: 3px; 
  border-bottom-style: solid;
}
nav {
	margin: 0px; 
  padding: 20px; 
  width: 200px; 
  text-align: center; 
  float: left;
}
section {
	padding: 20px; 
  text-align: justify; 
  margin-left: 240px; 
  border-left-color: gray; 
  border-left-width: 1px; 
  border-left-style: solid;
}
footer {
	padding: 20px; 
  text-align: center; 
  clear: both; 
  border-top-color: gray; 
  border-top-width: 1px; 
  border-top-style: solid;
}
li {
	list-style-type: none;
}