html {
  height: 100%;
  margin: 3px;
}

header {
  margin: 3px;
  padding: 20px;
  display: block;
  width: 100%;
  text-align: center;
  background-color: brown;
}

body {
  margin: 3px;
  height: 100%;

}

h1 {
  color: pink;
  font-family: Arial, sans-serif;

}

section {
  margin: 3px;
  width: 600px;
  height: 700px;
  display: inline-block;
  background-color: orange;
  padding: 5%;
  border-spacing: 50%;
}

nav {
  margin: 3px;
  line-height:100%;
  height: 100%;
  background-color:black;
  width:10%;
  display: inline-block;
  vertical-align: top;
  padding: 5%;
}

nav li a {
  color: orange;
}

footer {
  margin: 3px;
  width: 100%;
  background-color:green;
  text-align: center;
  padding:55px;
  display: block;
}

p {
  margin: 3px;
  color: black;
}