body{
font-family: Georgia, Arial;
font-size:15px;
line-height:1.5;
padding:0;
background-color:#35424a;

}

.container{
    width:80%;
    margin:auto;
    overflow: hidden;
}

header{
    background:#35424a;
    color:#ffffff;
    padding-top:30px;
    min-height:70px;
    border-bottom:#e8491d 3px solid;
}

header a{
    color:#ffffff;
    text-decoration:none;
    text-transform: uppercase;
    font-size:16px;
}

<style> {
  margin: 0;
  padding: 1;
  background: #ccc;
}
        
  nav {
  width: 550px;
  margin: 0 auto;
}
 
.nav ul {
  list-style: none;
  background-color: #050505;
  text-align: center;
  padding: 0;
  margin: 0;
}
.nav li {
  font-family: 'Georgia;
  font-size: 1.3em;
  line-height: 40px;
  height: 40px;
  border-bottom: 1px solid #888;
}
 
.nav a {
  text-decoration: none;
  color: #fff;
  display: block;
}
 
.nav a:hover {
  background-color: #1dbca1;
  text-align: center
}
 
.nav a.active {
  background-color: #fff;
  color: #444;
  cursor: default;
}
        
 @media screen and (min-width: 600px) {
  .nav li {
    width: 120px;
    border-bottom: none;
    height: 50px;
    line-height: 50px;
    font-size: 1.2em;
  }
    
  .nav li {
    display: inline-block;
    margin-right: -4px;
  }
    
  body {
  width: 90%;
  height: 1500px;
  margin: 0;
  padding: 0;
}

.border {
  position: absolute;
  top: 30px;
  left: 30px;
  border: #1dbca1;
  width: 95%;
  height: 250%;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
</style>


 <style>
.footer {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  background-color: #1dbca1;
  color: white;
  text-align: center;
}

</style>

<div class="footer">
  <p>Home About Design Contact
     Facebook Instagram Website Phone Address Sitemap</p>
</div>