heading{
  text-align:left; 
}

ul{ 
  text-align:center;
  text-decoration:none;
  list-style:none; 
  display: inline-block;
  background:pink;
  width:100%; 
}

li{
  list-style: none;
  display: inline-block; 
  font-size: 20px;
}   
.content-1 {
  background:#E88C10; 
  width:430px;
  height: 410px;
  display: center;
  margin:0 auto; 
}
.content-2 {
  position: relative;
  top:410px; 
	width: 300px;
	height: 300px;
	background: #b7d84b;
}
 .content-3 {
  position: relative;
  top: 00px;
  left: 310px;
	width: 100px;
	height: 300px;
	background: #44accf  
}

footer{
  position:relative;
  top:310px;
  height:200px; 
  width:430px; 
  float:right;
  margin:0 auto; 
  

}