body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
  color: #333;
}
.nav-link:hover{
  background-color:#20c4b5;
  border-radius: 5px;
}
footer{
  color: rgb(3, 95, 95);
}

.img .img-fluid{
  height: 700px;
  width: 600px;
}


@media (max-width:480px) {

  .marquee {
    display: none;
  }
  .principalimg{
    height: 50px;
  }
  
}