body{
  margin-top: 15px;
}
#main{
  margin-top: 50px;
  font-size: 20px;
}
.navbar{
  margin: 0;
  padding: 0;
}
.navbar-expand-sm .navbar-nav .nav-link{
  padding-left: 0;
}
.footer{
  border-top: 1px solid gray;
  margin-top: 25px;
}