body { padding-top: 70px; padding-bottom: 40px; }
body>.navbar{-webkit-transition:background-color .3s ease-in;transition:background-color .3s ease-in}
.navbar-text { margin: 5px; }
@media (min-width:768px){
  body>.navbar-transparent{background-color:transparent}
  body>.navbar-transparent .navbar-nav>.open>a{background-color:transparent!important}
}