body{
          background-image: url("https://cdn.pixabay.com/photo/2017/01/27/16/09/people-2013447_960_720.jpg");
          background-repeat: no-repeat;
          border-color: blue; 
}

/* nevbar */
.nav-link{
          color: rgb(145, 145, 198);
          
}
.nav-link:hover {
          color: black;
}
          
/* about us */
.btn {
          background-color: rgb(145, 145, 198);        
}
.btn:hover {
          background-color:black;
}

/* contact us */
.btn {
          background-color: rgb(145, 145, 198);
}

/* footer */
.icon {
          color: black;
}
.icon:hover {
          color:rgb(145, 145, 198 );
}