<style>
body {margin:0;}

.header {
  
  background-color: skyblue;
 
}
 .footer-grid {
  
  background-color: navy;
}
.footer-w3{
  
  background-color: navy;
}
.copy-section{
  
  background-color: navy;
}
.dropdown-menu{
  
  background-color: skyblue;
  color: white;
}



 

</style>