html {
  height: 100%;
  background-image: url("https://www.wpclipart.com/page_frames/animal/elephant_and_texture_background.png");

}
body {
   width: 800px;
   margin: 0 auto;
   padding-top: 5px;
   height: 100%;
}
​
header {
    background-color:black;
    color:white;
    text-align:center;
    padding:5px;
    font-size: 20px;
    display: block;
    width: 790px;
}
nav {
    line-height:30px;
    background-color:#eeeeee;
    min-height:100%;
    width:125px;
    display: inline-block;
    vertical-align: top;
    padding:5px;
    font-size: 18px;
}
nav ul {
    list-style-type: none;
}
a {
    color: black;
}
section {
    width: 200px;
    display: inline-block;
}
aside {
  width: 125px;
  display: inline-block;
  vertical-align: top;
  background-color:#eeeeee;
  font-size: 18px;
  min-height: 100%;
  padding: 8px;
}
aside ul {
    list-style-type: none;
}
footer {
    width: 790px;
    background-color:black;
    color:white;
    text-align:center;
    padding:5px;
    display: block;
}