body {
  padding-top: 86px;
}
.carousel-item {
  height: 65vh;
  min-height: 300px;
  background: no-repeat center center scroll;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
.portfolio-item {
  margin-bottom: 30px;
}

@media (min-width: 320px) and (max-width: 480px) {
    body {
      padding-top: 56px;
    }
}