header, nav, aside, article, footer{
  border: 1px solid black;
  margin: 10px
}
  
header {
  background-color: #B2D6FF; /* Medium blue */
}

nav {
  background-color: #F09A9D; /* Red */
  font-family: Arial, Helvetica, sans-serif;
}

article {
  background-color: #F5CF8E; /* Yellow */
  height: 200px;
   width: 600px;
}

aside {
  background-color: #D6E9FE; /* Light blue */
  float: right;*/
  height: 410px;*/
  width: 170px; */
  margin: 0px 10px 0px 10px;
}

footer {
  background-color: #70db8c /* Green */
}