@charset "utf-8";
/* CSS Document */

* {margin: 0; Padding: 0; }

div {
width: 1000px
}


header {
height: 150px; 
background-color: aqua;
}

nav {
height: 50px;
background-color: cadetblue;
}

Body div nav:nth-of-type(2) {
height: 120px;
background-color: aqua;
}

body div div article {
width: 250px;
height: 450px;
background-color: burlywood;
float: left;
} 

body div div article:nth-child(2){
width: 250px;
height: 450px;
background-color:lightblue;
float: left;
} 

body div div article:nth-child(3){
width: 250px;
height: 450px;
background-color: burlywood;
float: left;
} 

body div div article:nth-child(4){
width: 250px;
height: 450px;
background-color: lightblue;
float: left;
} 



section{
width: 1000px;
background-color: cadetblue;
height: 250px;
float: left;
}


body div aside article {
width: 333px;
height: 150px;
background-color: burlywood;
float: left;
} 

body div aside article:nth-child(2){
width: 333px;
height: 150px;
background-color:lightblue;
float: left;
} 

body div aside article:nth-child(3){
width: 333px;
height: 150px;
background-color:burlywood;
float: left;
} 


footer{
height:  120px;
background-color:darkgoldenrod;
clear: both;
}