.navbar-default, .header_view {
    background-image: url(https://cdn.pixabay.com/photo/2015/06/18/07/16/hex-813411_1280.jpg);
}

.navbar-brand-logo {
    height: 100%;
}


.navbar-brand-logo img {
    height: 60px;
}


#navigationPrimary a {
  font-weight: bold;
  font-size: 20px;
  color: #ffffff;
}

@media(min-width: 768px) {

  .navbar-brand {
    display: block;
    float: left;
    clear: both;
    margin: 0;
    width: auto;
    height: auto;
  }

  .navbar-brand img {
    width: auto;
	height: 100px;
  }

  .navbar-collapse {
    clear: left;
  }
}