index.css

html {
  height: 100%;
  /*width: 100%;*/
}

body {
  height: 100%;
  background-color:	#F0FFFF;
}

header {
  padding: 5px;
  display: block;
  width: 1316px;
  margin: 10px;
  text-align:center;
  background-color: 	#5F9EA0;
  color: white;
  font-family: Arial;
}

nav {
  line-height:10px;
  background-color:teal;
  width:240px;
  height:1200px;
  display: inline-block;
  vertical-align: top;
  float: left;
  margin: 10px;
}

section {
  width: 800px;
  display: inline-block;
  margin: 10px;
}

section img {
  height: 360px;
  width: 800px;
}

nav ul {
  list-style-type: none;
}

li {
  padding: 10px;
}

li a {
  color: white;
  text-decoration: none;
  font-size: 20px;
  font-family: Arial;
}

aside {
  width: 240px;
  height: 1200px;
  display: inline-block;
  vertical-align: top;
  background-color:teal;
  font-size: 16;
  margin: 10px;
}

aside p {
  color: white;
  font-family: Arial;
  font-size: 20px;
  text-align:center;
  padding: 5px;
}

aside img {
  height: 160px;
  width: 240px;
  margin-bottom: -20px;
}

footer {
  width: 100%;
  text-align:justify;
  padding:5px;
  display: block;
}

div h1 {
  font-family: Arial;
  text-align: center;
}

div p {
  font-family:Arial;
  text-align:justify;
}
/*
* {
  border: 1px solid red;
}